Steam, bypass or fan-powered: which one should I choose?

Bypass is the simplest and uses almost no electricity, but it needs warm air and sends water to the drain. Fan-powered adds output without a bypass duct. Steam makes its own heat: it humidifies at the same pace whatever the heat source.

Does my humidifier work with a heat pump?

An evaporative humidifier (bypass or fan-powered) delivers about 60% of its rated capacity on a heat pump, according to AprilAire, because the supply air is cooler. A steam model doesn’t have this problem.

Bypass and fan-powered models send water to the drain while they run: 3 to 6 gallons per hour according to our product sheets. Two models do without: the AprilAire 400 and the Source 1 BP4000MT. For steam, we check the model’s needs during the visit.

How much electricity does a steam humidifier cost?

For a 2,000 sq. ft reference home, our calculations give about $110 to $145 per winter at Rate D (11.142 ¢/kWh as of April 1, 2026), depending on the model. The house decides how much water is needed, not the size of the unit.

I have an air exchanger: do I still need a humidifier?

Often, yes. An HRV (heat recovery ventilator) replaces humid air with dry winter air. An ERV (energy recovery ventilator) keeps part of the moisture: in a CCHRC study, the humidifier then ran intermittently instead of almost continuously.

How often should I change the pad?

According to AprilAire, once per heating season for most models, and every 3 months for the model 400. Scale eventually clogs the pad and the unit humidifies less.

Which humidifier brands do you install?

Seven residential brands: AprilAire, Clean Comfort, GeneralAire, Healthy Climate (Lennox), Honeywell Home, Source 1 and Thermolec, a Montreal manufacturer. 54 models in all, from 10.9 to 36.8 gallons per day.

Whole-house or portable humidifier?

A whole-house humidifier connects to the home’s ducts and water supply: it humidifies every room with no tank to fill, and a control adjusts the level to the outdoor temperature. A portable unit humidifies one room.

How does the estimate work?

An advisor comes to look at your heating system, ducts and connections. The in-home estimate is free for residential customers, and you receive a written quote within 24 h after the visit.

Guide updated September 30, 2026

Humidifiers · Montreal · Laval · Longueuil · South Shore · North Shore

Whole-house humidifier installation in Montreal, Laval, Longueuil, South Shore and North Shore

This winter, a home that’s neither dry nor fogged up. Winter air holds almost no moisture once it’s heated, even when saturated: at −7 °C outside, it drops to 12 % at 24 °C, according to the NRC. We help you choose one of our 54 models, and we install it.

Find my model Try the simulator

Honeywell humidifier installed by AirGreen in Montreal, Laval, Longueuil, South Shore and North Shore

Winter air entering your home, once heated to 21 °COutside: −15 °C

6.7 %

Yellow mark: 30 %, the bottom of Health Canada’s range. Even saturated, cold air isn’t enough.

Free estimate · Humidifier

Your free in-home estimate

Four fields. An advisor calls you back to book the visit.

54residential humidifiers in our catalogue

7brands, including Thermolec, made in Montreal

1,200 to 4,400 sq. ftcovered by a single unit

Freein-home estimate, residential

Our residential humidifier brands, everywhere in Greater Montreal

On this pageSimulator Find my model Compare Technologies House cutaway Air exchanger Brands Cost per winter Catalogue True or false Maintenance Questions

01 · The simulator

Slide the thermometer: watch your windows react.

The colder it gets outside, the colder the glass. The right humidity level drops with the temperature: too high and fog appears; too low and the house dries out. The chart follows your settings.

−15 °Coutside

Indoor humidity: 22 %

The right humidity level for the outdoor temperature

Recommended setting (AprilAire)Fog on double window (NRC)Health Canada rangeYour home

22 %indoors

Too dry for the seasonYou’re below the recommended setting (28 %). Closing that gap is a whole-house humidifier’s job.

Outdoor temperature−15 °C

Humidity in the house22 %

Recommended setting28 %

Double window limit52 %

Your home22 %

Recommended setting: AprilAire control manual. Condensation limit: NRC, CBD-1 (1960), double window at 21 °C. Indicative: every home is different.

02 · Find my model

Three questions. All 54 models sort themselves as you answer.

We compare each model’s coverage with your floor area, taking your heating into account. Coverage marked “our estimate” comes from our own calculation.

Heated floor area (sq. ft)

Your central heating

What matters most

13 models fitOn a heat pump, we count 60% of the coverage of evaporative models (AprilAire). Steam keeps 100%.

Best fitSteam

Clean Comfort

HS1122-120/240V

22.1 gal/dayCovers about 2,600 sq. ft (our estimate)

2.9 kWWarranty 5 years

Add to my request

Product page

Other optionSteam

Clean Comfort

HS22-240

21.8 gal/dayCovers about 2,600 sq. ft (our estimate)

2.9 kWWarranty 5 years

Add to my request

Product page

Worth comparingSteam

Honeywell

HM700A1000/U

22 gal/dayCovers about 2,600 sq. ft (our estimate)

2.8 kWWarranty 5 years

Add to my request

Product page

03 · Head to head

Compare up to three models, side by side.

Add models with “Compare” in the results. The bars fill on the same scale.

0 / 3 models

Slot 1: add a model from the results

Slot 2: add a model from the results

Slot 3: add a model from the results

04 · The technologies

Steam, bypass, fan-powered or ductless: watch them work.

All four running side by side. Switch to a heat pump: evaporative models slow down, steam keeps its pace. Then open a technology to see how it works.

Steam

Real output100 %

Electricity1.4 to 4 kW

Water to drainDepends on the model

In our catalogue17 models

Bypass

Real output≈ 60 %

ElectricityVery low

Water to drain3 to 4.75 gal/h

In our catalogue29 models

Fan-powered

Real output≈ 60 %

ElectricityLow (fan)

Water to drain3.5 to 6 gal/h

In our catalogue7 models

Ductless

Real output100 %

ElectricityLow

Water to drain6 gal/h

In our catalogue1 model

On a heat pump, about 60 % of rated capacity for evaporative models (AprilAire FAQ). Water to drain: AirGreen product sheets.

54models

Our catalogue by technology

Bypass29

Steam17

Fan-powered7

Ductless1

Example from our catalogue: **Honeywell HM700 (steam)**

Steam boils the water itself.

A heating element or electrodes heat the water in a cylinder; the steam is injected into the duct. Same output whatever the supply air: the natural choice on a heat pump.

Pros

Same output on a heat pump
Precise control
No pad to change

Good to know

Uses electricity (1.4 to 4 kW)
Cylinder or electrodes to maintain

The 4 technologies in numbers (our 54 product sheets)
	Steam	Bypass	Fan-powered	Ductless
Models in our catalogue	17	29	7	1
Output (US gal/day)	10.9 to 36.8	12 to 19	18	13
Coverage (sq. ft)	1,300 to 4,400	1,200 to 2,000	1,770 to 2,100	2,000
Electricity	1.4 to 4.05 kW	Very low (24 V)	Low (fan)	Low
Water to drain while running	Depends on the model	3 to 4.75 gal/h	3.5 to 6 gal/h	6 gal/h
On a heat pump	100 % of its capacity	≈ 60 %	≈ 60 %	Not applicable
Maintenance	Cylinder or electrodes	Pad every season	Pad every season	Pad, hot water
Manufacturer warranty	2 to 5 years	5 to 10 years	5 years	5 years

05 · House cutaway

Your humidifier never works alone.

It shares the ducts with the heating system and the air exchanger. Tap a number to see who does what, and how each one changes humidity.

In the house

Humidifier

It adds water to the air the system blows. Steam, bypass or fan-powered: on the duct, near the heating unit.

See the 54 models

06 · Humidifier + air exchanger

Your air exchanger decides the size of your humidifier.

An air exchanger renews the air in winter. Depending on its core, it throws the moisture outside or keeps part of it. Switch to see.

The HRV recovers heat, not humidity.

Humid indoor air goes out, dry winter air comes in: the house dries out. In the same study, the humidifier had to run almost continuously with an HRV.

Lifebreath RNC205 air exchanger — Lifebreath RNC205

GreenTek Solace air exchanger — GreenTek Solace

Humidifier: plan some extra capacity.

See our air exchangers

Our air exchanger brands: vänEE · Lifebreath · Fantech · Venmar · GreenTek · Broan-NuTone. Source: CCHRC, Energy Recovery Ventilators in Cold Climates, 2014.

07 · Our 7 brands

Our residential humidifier brands, explained.

Tap a brand: who makes it, its technologies, its models from smallest to largest, and a link to its full range.

Made in MontrealThermolec

All Thermolec models

Montreal manufacturer since 1973, on Lucien-Thimens Street. Electric heating, controls and steam humidifiers.

Models3

Output14–37 gal/d

Coverage1,600–4,400 sq. ft

Max. warranty2 years

Coverage: manufacturer figure or our estimate, stated on each product page.

Steam

ACU-513.8 gal/d ACU-10PN27.6 gal/d ACU-15PN36.8 gal/d

Models by brand and technology

Honeywell11

Clean Comfort11

GeneralAire10

Healthy Climate8

AprilAire7

Source 14

Thermolec3

08 · What it costs to run

Steam: about $110 to $145 per winter for 2,000 sq. ft.

Surprise: a bigger model doesn’t cost more to run. Your house decides how much water needs to evaporate; the unit only supplies it.

Steam model

Floor area (sq. ft)

Honeywell HM700A1000/U · 2,000 sq. ft home

$130per winter

Water per winter381 gal

Electricity1,163 kWh

At full output$0.31/h

3.05 kWh per gallon × 381 gallons per winter × 11.142 ¢/kWh (Rate D, April 1, 2026). Reference home of 2,000 sq. ft, scaled to floor area: indicative.

All 17 steam models, same home ($111 to $145)

09 · The full catalogue

All 54 models, as a chart and a table.

Each dot is a model: the further right, the more it humidifies; the higher, the larger the area it covers. The table sorts by output, coverage or brand and links to every product page.

All 54 models at a glance: tap a dot

1,0002,0003,0004,00010152025303540

Your home: 2,000 sq. ft

Output (US gal/day)Coverage (sq. ft)

SteamBypassFan-poweredDuctlessFaded: too small for your home (“Find my model” tool)

Honeywell

HM700A1000/U

Steam

Output22 gal/dayElectricity2.80 kWWater to drainDepends on the modelWarranty5 years

Covers about 2,600 sq. ft (our estimate)

Add to my request Details

Sort:

BrandModelTypeOutput (gal/day)Coverage (sq. ft)Warranty

ThermolecACU-15PNSteam36.84,400 estimate2 years GeneralAireGFDS25LCBUSteam354,200 estimate5 years GeneralAireGFDS25PBUSteam354,200 estimate5 years AprilAire865Steam34.64,000 manufacturer5 years AprilAire800Steam34.64,000 manufacturer5 years Clean ComfortHS2529-208/240VSteam29.33,500 estimate5 years Clean ComfortHS29-208Steam28.73,400 estimate5 years GeneralAireGF5500Steam28.53,400 estimate5 years ThermolecACU-10PNSteam27.63,300 estimate2 years Clean ComfortHS1122-120/240VSteam22.12,600 estimate5 years HoneywellHM700A1000/USteam222,600 estimate5 years HoneywellHM750A1000/USteam222,600 estimate5 years Clean ComfortHS22-240Steam21.82,600 estimate5 years GeneralAireGF1099LHDBypass191,770 manufacturer5 years Clean ComfortHE18FA2Fan-powered182,100 estimate5 years Healthy ClimateHCWP3-18AFan-powered182,100 manufacturer5 years Healthy ClimateHCWP3-18Fan-powered182,100 manufacturer5 years AprilAire700Fan-powered182,100 manufacturer5 years HoneywellHE300A1005/UFan-powered182,100 estimate5 years Source 1FP7000MTFan-powered182,100 estimate5 years GeneralAireGF1137LFan-powered181,770 manufacturer5 years HoneywellHE250A1005/UBypass172,000 estimate5 years Clean ComfortHE17MBypass171,650 manufacturer10 years Clean ComfortHE17A2Bypass172,000 estimate5 years Clean ComfortHE17M2Bypass172,000 estimate5 years Healthy ClimateHCWB3-17Bypass172,000 manufacturer5 years Healthy ClimateHCWB3-17ABypass172,000 manufacturer5 years Healthy ClimateHCWB3Bypass172,000 manufacturer5 years AprilAire600Bypass172,000 manufacturer5 years AprilAire400Bypass172,000 manufacturer5 years HoneywellHE205C1000/UBypass172,000 estimate5 years HoneywellHE250C1014/UBypass172,000 estimate5 years HoneywellHE200C1001/UBypass172,000 estimate5 years Source 1BP6000MTBypass172,000 estimate5 years Source 1BP4000MTBypass172,000 estimate5 years GeneralAireGF4200DMMBypass172,000 estimate5 years GeneralAireGF1042DMDBypass171,500 manufacturer5 years GeneralAireGF1042DMMBypass171,500 manufacturer5 years GeneralAireGFDS15PBUSteam15.81,800 estimate5 years ThermolecACU-5Steam13.81,600 estimate2 years AprilAire300Ductless132,000 manufacturer5 years Clean ComfortHE12MBypass121,200 manufacturer10 years Clean ComfortHE12M2Bypass121,400 estimate5 years Healthy ClimateHCWB3-12Bypass121,500 manufacturer5 years Healthy ClimateHCWB3-12ABypass121,500 manufacturer5 years Healthy ClimateHCWB3-12KBypass121,500 manufacturer5 years HoneywellHM612A1000/USteam121,400 estimate5 years AprilAire500Bypass121,500 manufacturer5 years HoneywellHE150C1014/UBypass121,400 estimate5 years HoneywellHE105C1000/UBypass121,400 estimate5 years HoneywellHE100C1001/UBypass121,400 estimate5 years Source 1BP5000MTBypass121,400 estimate5 years GeneralAireGF3200DMMBypass121,400 estimate5 years Clean ComfortHS11-120Steam10.91,300 estimate5 years

54 models shown. “estimate”: coverage calculated by AirGreen from the output.

10 · True or false

Six common beliefs about winter humidity. Test yourself.

Answer and the explanation appears with its source. Your score updates.

1 / 6More humidity is always better.

2 / 6On a heat pump, a bypass humidifier loses effectiveness.

3 / 6An HRV air exchanger dries out the house in winter.

4 / 6You should keep 45% all winter.

5 / 6A steam humidifier doesn’t need warm air.

6 / 6A humidifier pad lasts for years.

Score: 0 / 06 left to answer. A question that isn’t here? Ask our advisor.

11 · A season with your humidifier

Four steps a year. We can do them for you.

A well-maintained humidifier works like on day one. Here’s the calendar, from October to April.

01October

Start-up

New pad, water on, control set to automatic. We check the drain on models that have one.

02November to March

The control does the work

It lowers humidity as the cold sets in, to protect the windows. Nothing to do but watch for fog.

03Mid-season

The AprilAire 400 pad

Every 3 months according to AprilAire. For steam models, cylinder maintenance per the manual.

04April

End of season

Water off and summer settings per the model’s manual. A technician can take care of it during maintenance.

12 · Frequently asked questions

Answers to the questions we get every fall.

Search the questions

Health Canada recommends 30 to 50% relative humidity. In extreme cold, you lower it: the AprilAire control manual recommends 25% at −18 °C and 15% at −29 °C to avoid condensation on windows. An automatic control makes this adjustment on its own.

Your project

A properly humidified home from the first cold snap.

We come look at your heating, ducts, air exchanger and windows, then recommend the right model. The in-home estimate is free, and the written quote arrives within 24 h after the visit.

Get my free estimate 514 316-2973

Montreal and Laval 514-316-2973 · South Shore 514-316-3007 · showroom in Boucherville, 1370 Joliot-Curie St., Unit 712

The AirGreen team in one minute: the people who come to your home.

RBQ licence5645-9605-01 · 15.8 · 15.10 · 16

Free in-home estimateResidential

Written quote in 24 hAfter the visit

$5M insuranceCivil liability

Sources checked on September 30, 2026.

Health Canada, Addressing moisture and mould in your home (30 to 50 % relative humidity).
AprilAire, control manual for models 60, 62 and 4655 (doc. 10008993), table 1: recommended setting by outdoor temperature (°F converted to °C by AirGreen).
AprilAire FAQ: about 60 % capacity on a heat pump; pad replacement frequency.
National Research Council Canada, Digest CBD-1, Humidity in Canadian Buildings, N. B. Hutcheon, January 1960: maximum humidity without condensation, double window.
Cold Climate Housing Research Center, Energy Recovery Ventilators in Cold Climates, December 2014.
Hydro-Québec, Electricity Rates effective April 1, 2026, Rate D: 11.142 ¢/kWh above 40 kWh per day.
Manufacturer spec sheets (AprilAire, Clean Comfort, GeneralAire, Healthy Climate, Honeywell Home, Source 1, Thermolec) and AirGreen product pages as of September 30, 2026.

Coverage marked “our estimate” is calculated by AirGreen from the output (gal/day) when the manufacturer doesn’t publish one. Electricity costs are indicative: reference home, Rate D, 150-day winter.

Guide updated September 30, 2026

Humidifiers · Montreal · Laval · Longueuil · South Shore · North Shore

Whole-house humidifier installation in Montreal, Laval, Longueuil, South Shore and North Shore

Find my model Try the simulator

Free estimate · Humidifier

Your free in-home estimate

Four fields. An advisor calls you back to book the visit.

Winter air entering your home, once heated to 21 °COutside: −15 °C

6.7 %

Yellow mark: 30 %, the bottom of Health Canada’s range. Even saturated, cold air isn’t enough.

54residential humidifiers in our catalogue

7brands, including Thermolec, made in Montreal

1,200 to 4,400 sq. ftcovered by a single unit

Freein-home estimate, residential

Our residential humidifier brands, everywhere in Greater Montreal

On this page

Simulator Find my model Compare Technologies House cutaway Air exchanger Brands Cost per winter Catalogue True or false Maintenance Questions

01 · The simulator

Slide the thermometer: watch your windows react.

The colder it gets outside, the colder the glass. The right humidity level drops with the temperature: too high and fog appears; too low and the house dries out. The chart follows your settings.

−15 °Coutside

Indoor humidity: 22 %

22 %indoors

Too dry for the seasonYou’re below the recommended setting (28 %). Closing that gap is a whole-house humidifier’s job.

Outdoor temperature−15 °C

Humidity in the house22 %

Recommended setting28 %

Double window limit52 %

Your home22 %

Recommended setting: AprilAire control manual. Condensation limit: NRC, CBD-1 (1960), double window at 21 °C. Indicative: every home is different.

The right humidity level for the outdoor temperature

Recommended setting (AprilAire)Fog on double window (NRC)Health Canada rangeYour home

02 · Find my model

Three questions. All 54 models sort themselves as you answer.

We compare each model’s coverage with your floor area, taking your heating into account. Coverage marked “our estimate” comes from our own calculation.

Heated floor area (sq. ft)

Your central heating

What matters most

13 models fitOn a heat pump, we count 60% of the coverage of evaporative models (AprilAire). Steam keeps 100%.

Best fitSteam

Clean Comfort

HS1122-120/240V

22.1 gal/dayCovers about 2,600 sq. ft (our estimate)

2.9 kWWarranty 5 years

Add to my request

Product page

Other optionSteam

Clean Comfort

HS22-240

21.8 gal/dayCovers about 2,600 sq. ft (our estimate)

2.9 kWWarranty 5 years

Add to my request

Product page

Worth comparingSteam

Honeywell

HM700A1000/U

22 gal/dayCovers about 2,600 sq. ft (our estimate)

2.8 kWWarranty 5 years

Add to my request

Product page

03 · Head to head

Compare up to three models, side by side.

Add models with “Compare” in the results. The bars fill on the same scale.

0 / 3 models

Slot 1: add a model from the results

Slot 2: add a model from the results

Slot 3: add a model from the results

04 · The technologies

Steam, bypass, fan-powered or ductless: watch them work.

All four running side by side. Switch to a heat pump: evaporative models slow down, steam keeps its pace. Then open a technology to see how it works.

Steam

Real output100 %

Electricity1.4 to 4 kW

Water to drainDepends on the model

In our catalogue17 models

Bypass

Real output≈ 60 %

ElectricityVery low

Water to drain3 to 4.75 gal/h

In our catalogue29 models

Fan-powered

Real output≈ 60 %

ElectricityLow (fan)

Water to drain3.5 to 6 gal/h

In our catalogue7 models

Ductless

Real output100 %

ElectricityLow

Water to drain6 gal/h

In our catalogue1 model

On a heat pump, about 60 % of rated capacity for evaporative models (AprilAire FAQ). Water to drain: AirGreen product sheets.

54models

Our catalogue by technology

Bypass29

Steam17

Fan-powered7

Ductless1

Steam boils the water itself.

A heating element or electrodes heat the water in a cylinder; the steam is injected into the duct. Same output whatever the supply air: the natural choice on a heat pump.

Pros

Same output on a heat pump
Precise control
No pad to change

Good to know

Uses electricity (1.4 to 4 kW)
Cylinder or electrodes to maintain

Steam

Models in our catalogue17

Output (US gal/day)10.9 to 36.8

Coverage (sq. ft)1,300 to 4,400

Electricity1.4 to 4.05 kW

Water to drain while runningDepends on the model

On a heat pump100 % of its capacity

MaintenanceCylinder or electrodes

Manufacturer warranty2 to 5 years

Bypass

Models in our catalogue29

Output (US gal/day)12 to 19

Coverage (sq. ft)1,200 to 2,000

ElectricityVery low (24 V)

Water to drain while running3 to 4.75 gal/h

On a heat pump≈ 60 %

MaintenancePad every season

Manufacturer warranty5 to 10 years

Fan-powered

Models in our catalogue7

Output (US gal/day)18

Coverage (sq. ft)1,770 to 2,100

ElectricityLow (fan)

Water to drain while running3.5 to 6 gal/h

On a heat pump≈ 60 %

MaintenancePad every season

Manufacturer warranty5 years

Ductless

Models in our catalogue1

Output (US gal/day)13

Coverage (sq. ft)2,000

ElectricityLow

Water to drain while running6 gal/h

On a heat pumpNot applicable

MaintenancePad, hot water

Manufacturer warranty5 years

05 · House cutaway

Your humidifier never works alone.

It shares the ducts with the heating system and the air exchanger. Tap a number to see who does what, and how each one changes humidity.

In the house

Humidifier

It adds water to the air the system blows. Steam, bypass or fan-powered: on the duct, near the heating unit.

See the 54 models

06 · Humidifier + air exchanger

Your air exchanger decides the size of your humidifier.

An air exchanger renews the air in winter. Depending on its core, it throws the moisture outside or keeps part of it. Switch to see.

The HRV recovers heat, not humidity.

Humid indoor air goes out, dry winter air comes in: the house dries out. In the same study, the humidifier had to run almost continuously with an HRV.

Humidifier: plan some extra capacity.

See our air exchangers

Our air exchanger brands: vänEE · Lifebreath · Fantech · Venmar · GreenTek · Broan-NuTone. Source: CCHRC, Energy Recovery Ventilators in Cold Climates, 2014.

07 · Our 7 brands

Our residential humidifier brands, explained.

Tap a brand: who makes it, its technologies, its models from smallest to largest, and a link to its full range.

Made in MontrealThermolec

All Thermolec models

Montreal manufacturer since 1973, on Lucien-Thimens Street. Electric heating, controls and steam humidifiers.

Models3

Output14–37 gal/d

Coverage1,600–4,400 sq. ft

Max. warranty2 years

Coverage: manufacturer figure or our estimate, stated on each product page.

Steam

ACU-513.8 gal/d ACU-10PN27.6 gal/d ACU-15PN36.8 gal/d

Models by brand and technology

Honeywell11

Clean Comfort11

GeneralAire10

Healthy Climate8

AprilAire7

Source 14

Thermolec3

08 · What it costs to run

Steam: about $110 to $145 per winter for 2,000 sq. ft.

Surprise: a bigger model doesn’t cost more to run. Your house decides how much water needs to evaporate; the unit only supplies it.

Steam model

Floor area (sq. ft)

Honeywell HM700A1000/U · 2,000 sq. ft home

$130per winter

Water per winter381 gal

Electricity1,163 kWh

At full output$0.31/h

3.05 kWh per gallon × 381 gallons per winter × 11.142 ¢/kWh (Rate D, April 1, 2026). Reference home of 2,000 sq. ft, scaled to floor area: indicative.

All 17 steam models, same home ($111 to $145)

09 · The full catalogue

All 54 models, as a chart and a table.

Each dot is a model: the further right, the more it humidifies; the higher, the larger the area it covers. The table sorts by output, coverage or brand and links to every product page.

All 54 models at a glance: tap a dot

1,0002,0003,0004,00010152025303540

Your home: 2,000 sq. ft

Output (US gal/day)Coverage (sq. ft)

SteamBypassFan-poweredDuctlessFaded: too small for your home (“Find my model” tool)

Honeywell

HM700A1000/U

Steam

Output22 gal/dayElectricity2.80 kWWater to drainDepends on the modelWarranty5 years

Covers about 2,600 sq. ft (our estimate)

Add to my request Details

Sort:

54 models shown. “estimate”: coverage calculated by AirGreen from the output.

10 · True or false

Six common beliefs about winter humidity. Test yourself.

Answer and the explanation appears with its source. Your score updates.

1 / 6More humidity is always better.

2 / 6On a heat pump, a bypass humidifier loses effectiveness.

3 / 6An HRV air exchanger dries out the house in winter.

4 / 6You should keep 45% all winter.

5 / 6A steam humidifier doesn’t need warm air.

6 / 6A humidifier pad lasts for years.

Score: 0 / 06 left to answer. A question that isn’t here? Ask our advisor.

11 · A season with your humidifier

Four steps a year. We can do them for you.

A well-maintained humidifier works like on day one. Here’s the calendar, from October to April.

01October

Start-up

New pad, water on, control set to automatic. We check the drain on models that have one.

02November to March

The control does the work

It lowers humidity as the cold sets in, to protect the windows. Nothing to do but watch for fog.

03Mid-season

The AprilAire 400 pad

Every 3 months according to AprilAire. For steam models, cylinder maintenance per the manual.

04April

End of season

Water off and summer settings per the model’s manual. A technician can take care of it during maintenance.

12 · Frequently asked questions

Answers to the questions we get every fall.

Search the questions

Your project

A properly humidified home from the first cold snap.

We come look at your heating, ducts, air exchanger and windows, then recommend the right model. The in-home estimate is free, and the written quote arrives within 24 h after the visit.

Get my free estimate 514 316-2973

Montreal and Laval 514-316-2973 · South Shore 514-316-3007 · showroom in Boucherville, 1370 Joliot-Curie St., Unit 712

The AirGreen team in one minute: the people who come to your home.

RBQ licence5645-9605-01 · 15.8 · 15.10 · 16

Free in-home estimateResidential

Written quote in 24 hAfter the visit

$5M insuranceCivil liability

Sources checked on September 30, 2026.

Health Canada, Addressing moisture and mould in your home (30 to 50 % relative humidity).
AprilAire, control manual for models 60, 62 and 4655 (doc. 10008993), table 1: recommended setting by outdoor temperature (°F converted to °C by AirGreen).
AprilAire FAQ: about 60 % capacity on a heat pump; pad replacement frequency.
National Research Council Canada, Digest CBD-1, Humidity in Canadian Buildings, N. B. Hutcheon, January 1960: maximum humidity without condensation, double window.
Cold Climate Housing Research Center, Energy Recovery Ventilators in Cold Climates, December 2014.
Hydro-Québec, Electricity Rates effective April 1, 2026, Rate D: 11.142 ¢/kWh above 40 kWh per day.
Manufacturer spec sheets (AprilAire, Clean Comfort, GeneralAire, Healthy Climate, Honeywell Home, Source 1, Thermolec) and AirGreen product pages as of September 30, 2026.