Updated September 30, 2026

Installation in Montréal, Laval, Longueuil, South Shore and North Shore

Add-on central heat pump: keep your furnace, add heating and air conditioning.

A coil on your furnace, a unit outside: the heat pump does most of the work and the furnace stays as backup in extreme cold. Gas, oil, propane or electric: see how it works, which grant applies and which model fits your home.

Find my add-on See the 125 models

$7,300 maximum, Énergir dual-energy offer, gas-heated house (forced air)

$120 per 1,000 BTU/h at -8 °C with LogisVert (ENERGY STAR cold climate)

125 add-on models from 1.5 to 5 tons, six brands

Your free in-home estimate

We come see your furnace, we measure, and you get a written quote within 24 h.

Your name Phone (optional)Email

Your current furnace (one click)

Anything to tell us? (optional)

1.5 to 5 tons from 18,000 to 60,000 BTU/h

6 brands Durastar, Elios, Gree, CanAir, Midea, Samsung

9 months to claim LogisVert

-12 °C dual-energy switchover (Rate DT)

01 · How it works

How does an add-on heat pump work? Move the thermometer.

An add-on heat pump shares the work with your furnace. Choose your energy, slide the temperature, tap the numbered points.

Outdoor temperature-8 °C

-30 °C0 °C+32 °C

Your furnace

Who is heating right nowHeat pump heating

The heat pump captures heat from the outdoor air and delivers it to the coil. The furnace stays off; only its blower works.

Heat pumpRunning

FurnaceBlower only

Above the switchover: 5.131¢/kWh on Rate DT

1The outdoor unit

It captures heat from the outdoor air in winter and rejects it in summer. The cold-climate models in our catalogue are rated down to -30 °C by their manufacturer.

Who handles it: AirGreen

02 · Your furnace, your path

Add-on heat pump on a gas, oil, propane or electric furnace: the grant is not the same.

Choose your heating energy. We tell you which grant to apply for, which electricity rate applies and the trap to avoid.

The grant to aim for$7,300 maximum, forced-air house or condo

AirGreen: heat pump, coil, controls and electrical. A licensed partner: anything involving gas. Énergir: your file.

Rate D, Flex D or DT: our guide

Hydro-Québec and Énergir dual-energy offer

Up to $7,300 for a forced-air house or condo ($8,600 for a duplex, $9,100 for a triplex; $6,800 with Enbridge Gaz Québec). Total assistance cannot exceed 80% of costs.

Rate DT for 10 years

Electricity does more than 70% of the heating according to Hydro-Québec: 5.131¢/kWh above -12 °C; gas takes over below.

In the right order

Sign the contract with Énergir before installation and apply within 12 months. LogisVert is not added for the same heat pump.

The full table, energy by energy
Your furnace	Natural gas	Oil	Propane	Electric
Main grant	Hydro-Québec and Énergir dual-energy offer	LogisVert (Hydro-Québec)	LogisVert (Hydro-Québec)	LogisVert (Hydro-Québec)
Amount	Up to $7,300 (house, forced air), max. 80% of costs	$120 per 1,000 BTU/h at -8 °C	$120 per 1,000 BTU/h at -8 °C	$120 per 1,000 BTU/h at -8 °C, up to 100% of the pre-tax cost
Electricity rate	DT required for 10 years: 5.131¢ / 30.001¢	DT possible: 5.131¢ / 30.001¢	DT possible: 5.131¢ / 30.001¢	D: 7.065¢ then 11.142¢
In extreme cold	Gas takes over below -12 °C	Oil takes over below -12 °C	Propane takes over below -12 °C	The electric elements join in
Deadline	Énergir contract before the work; apply within 12 months	Apply no later than 9 months after	Apply no later than 9 months after	Apply no later than 9 months after
Good to know	No LogisVert on top for the same heat pump	Chauffez vert closed March 31, 2026; have Hydro-Québec confirm your case	Chauffez vert propane component closed; have your case confirmed	A coil or an outdoor unit alone is not subsidized
Fuel work	Licensed partner	Licensed partner	Licensed partner	None: AirGreen does it all

Hydro-Québec rates in effect April 1, 2026. Switchover at -12 °C in most regions, -15 °C in some zones. Indicative amounts.

03 · The configurator

Which add-on heat pump fits your furnace? Four questions, one real model.

Each answer recalculates the result. The models suggested are from our catalogue, verified by their AHRI number.

Your progress

1Your furnace runs on…

2The size (often that of your current air conditioner)

3What matters most to you

4A brand in mind?

Your add-on

MIDEA EVOX G3 3 ton System photo (outdoor unit and coil)

At -8 °C, it still delivers 81% of its rated capacity

Heat at -8 °C29,200 BTU/h

SEER2 · HSPF215.8 · 9.4

RefrigerantR-454B

Heats down to-30 °C

Wi-FiIncluded

AHRI216623526

The grant$7,300 Énergir, forced-air house or condo

Énergir dual-energy offer: up to $7,300 for a forced-air house or condo (total assistance max. 80% of costs). No LogisVert on top.

Rate DT possible: 5.131¢/kWh above -12 °C, the furnace natural gas takes over below. 10-year commitment with the dual-energy offer.

Plan BDURASTAR Sirius Heat 3 ton 29,200 BTU/h at -8 °C · R-454B GREE FLEXX R32 3 ton 26,000 BTU/h at -8 °C · R-32

Model page

Indicative amount; only Hydro-Québec or Énergir confirm the grant. Models verified on ENERGY STAR on September 30, 2026. During the visit, we confirm your furnace’s width, its blower airflow, the outdoor unit location and your electrical panel.

04 · What we install

Add-on heat pump installation: eight parts, and who handles each one.

Tap a part: it lights up in the diagram. AirGreen holds RBQ licence 5645-9605-01 (15.8, 15.10 and 16); fuel work is done by a licensed partner.

The coil

Cased, A-coil or cabinet. It sits on the furnace; its width matches the furnace (14.5 to 24.5 in. in our catalogue).

AirGreenRBQ licence: 15.10 Refrigeration

05 · In extreme cold

Add-on heat pumps in extreme cold: thirteen verified models, ranked.

Pick the criterion and the size: the ranking updates. Every value comes from ENERGY STAR listings, by AHRI number.

06 · Compare

Compare add-on heat pumps side by side, with verified figures.

Tap models to add them. The green dot marks the best in each row.

CriterionMIDEA EVOX G3 3 ton DURASTAR Sirius Heat 3 ton GREE FLEXX R32 3 ton

Heat at -8 °C29,200 BTU/h29,200 BTU/h26,000 BTU/h

Kept at -8 °C81%81%81%

LogisVert (indicative)$3,504$3,504$3,120

SEER2 (cooling)15.815.816.0

HSPF2 (heating)9.49.48.5

Heats down to-30 °C-30 °C-30 °C

RefrigerantR-454BR-454BR-32

Wi-FiIncludedOptionalOptional

Manufacturer warranty12 years parts · 12 years compressor10 years parts · 10 years compressor12 years parts · 12 years compressor

AHRI216623526217493437216765692

Warranty: manufacturer values listed on our product pages. “Kept at -8 °C”: heat delivered at -8 °C divided by the rated cooling capacity (ENERGY STAR).

07 · Our 6 brands

Our add-on heat pump brands in Montréal and Montérégie.

Six brands, 125 models. Tap a brand: its series, its refrigerant, its share of the catalogue and a model verified by its AHRI number.

Brand 1 / 6

DURASTAR

The largest line-up in our add-on catalogue: four series and coils from 14.5 to 24.5 in. to match your furnace’s width.

SeriesSirius Heat, Standard, Advanced, Core

RefrigerantR-454B and R-410A

Rated heatingdown to -30 °C (Sirius Heat)

40 models out of 125 · 32% of the catalogue

Add-on heat pumps DURASTAR

The verified modelDURASTAR Sirius Heat 3 ton

The share of its rated cooling capacity it still delivers as heat at -8 °C (ENERGY STAR listing).

Heat at -8 °C29,200 BTU/h

LogisVert (indicative)$3,504

SEER2 · HSPF215.8 · 9.4

AHRI217493437

Manufacturer warranty: 10 years parts · 10 years compressorModel page

See the most popular brands AirGreen is a GREE “Elite” and MIDEA “Pro” dealer.

The add-on catalogue in numbers

Tap a view: the chart redraws with the real figures of our 125 models.

40 Durastar

28 ELIOS

20 Gree

18 CanAir

12 Midea

7 Samsung

Durastar makes up a third of the add-on catalogue. Filter the 125 models

08 · Rate DT

Why the furnace takes over below -12 °C.

With gas, oil or propane backup, Rate DT changes the price per kWh with the temperature. Slide the thermometer.

Outdoor temperature-8 °C

The heat pump heats · 5.131¢/kWh

Above the switchover, electricity on Rate DT costs 5.131¢/kWh, less than Rate D: that is where the heat pump works.

Hydro-Québec rates in effect April 1, 2026, excluding the fixed charge. With the gas dual-energy offer, Rate DT is mandatory for 10 years. Our full guide: Rate D, Flex D or DT .

09 · Air exchanger

HRV or ERV air exchanger: a home that heats better also needs to breathe.

An air exchanger replaces stale air with fresh air while keeping much of the heat. Choose the type and the season.

Our air exchanger brands

vänEE41

Venmar41

Broan-NuTone23

Fantech16

Lifebreath14

GreenTek13

Direct Air8

The HRV warms fresh air with the heat of the outgoing stale air, without mixing the two. It also helps remove excess humidity.

$500 Rénoclimat for a certified HRV or ERV, with EnerGuide evaluations before and after.

156 air exchangers in our catalogue, seven brands.

Good to know: it often connects to the furnace ductwork. If we install your add-on, that is the right time to talk about it. Neither LogisVert nor the dual-energy offer requires one.

The 156 air exchangers Rénoclimat: the $500 grant

Does your home need an air exchanger?

Tick what you notice at home.

1 sign(s) out of 6Not urgent

Few signs: we’ll still take a look during the visit, since we’ll be right next to your ducts.

$500 Rénoclimat for an HRV or ERV, EnerGuide evaluations before and after

156 air exchangers in our catalogue

vänEE · 41Venmar · 41Broan-NuTone · 23Fantech · 16Lifebreath · 14GreenTek · 13Direct Air · 8

See air exchangers

10 · Our projects

Add-on heat pumps installed by AirGreen on the South Shore and in Montérégie.

Four real projects: choose a city to see the photo, the original furnace and what we did.

BeforeExisting Arcoaire electric furnace

What we did

1Coil installed above the furnace

2Custom-made duct transition

3Outdoor unit on a raised pad

4Controls set so the elements don’t heat at the same time

5Condensate pump

Read this project in detail

11 · Grants

Add-on heat pump grants in 2026: three numbers, two closed programs.

Flip each card for its conditions. LogisVert and the dual-energy offer are never combined for the same heat pump.

Natural gas$7,300 maximum, Énergir dual-energy offer

Electric, oil, propane$120 per 1,000 BTU/h at -8 °C, LogisVert

Fuel backup5,131 ¢ per kWh on Rate DT, above the switchover

Closed: be wary of anyone still promising them

~~Chauffez vert, oil and propane~~ · closed March 31, 2026~~Federal oil-to-heat-pump program~~ · registration closed July 31, 2026

Your LogisVert deadline

Enter the installation date: we calculate the deadline from today.

Installation date (planned or done)

LogisVert must be claimed no later than 9 months after installation.

LogisVert deadlineJune 30, 2027 273 days left.

Before the work Gas: the Énergir contract is signed before installation.

After installation LogisVert: 9 months. Dual-energy offer: apply within 12 months.

To keep The detailed invoice and the AHRI number of the installed system.

12 · The steps

From the free estimate to the grant, in five steps.

Tap a step. Nothing starts without a written quote.

Step 1 out of 5

Free estimate at your home

We measure the width of the furnace and plenum, look at your ducts, your electrical panel and the outdoor unit location. We identify your heating energy.

13 · True or false

Six common beliefs about add-ons and their grants.

Answer, and we’ll correct you with the source.

You have to replace your furnace to get a central heat pump.

You can combine LogisVert and Énergir’s grant for the same heat pump.

Chauffez vert still pays to get off oil.

On Rate DT, the furnace takes over on its own in extreme cold.

R-410A is banned in Canada.

Hydro-Québec may call you to offer LogisVert.

14 · Frequently asked questions

Add-on heat pump: frequently asked questions.

12 questions

A heat pump whose indoor coil sits on your existing furnace, with an outdoor unit. The furnace keeps its blower and becomes the backup in extreme cold. You gain air conditioning and mostly electric heating.

AirGreen · Montréal, Laval, Longueuil, North Shore, South Shore

Keep your furnace. We add the rest, and we handle the paperwork.

We install the heat pump, the coil, the controls and the electrical. Any work on the gas, oil or propane part of your furnace is done by a partner holding the licence.

Book my free estimate 514 316-2973

RBQ licence 5645-9605-01 15.8 Ventilation · 15.10 Refrigeration · 16 Electrical

Free on-site estimate We measure your furnace and ducts before proposing anything.

Written quote within 24 h After the visit, a complete price in writing.

$5M liability insurance From start to finish.

Hydro-Québec does no phone or door-to-door solicitation for LogisVert. Unsure about a call? Hang up and call Hydro-Québec at 1-833-396-1888.

Sources checked on September 30, 2026.

Hydro-Québec, LogisVert program, participation guide version 1.10 (September 15, 2026) and heat pump FAQ
Hydro-Québec, Rate DT and electricity rates in effect April 1, 2026
Hydro-Québec and Énergir, residential dual-energy offer; Énergir, participation guide (April 1, 2026, revised June 18, 2026)
Gouvernement du Québec, Chauffez vert: oil and propane component closed March 31, 2026; electricity and natural gas dual-energy component
Natural Resources Canada, Oil to Heat Pump Affordability program: last day to register in Québec, July 31, 2026
Regulation respecting oil-fired heating appliances (Q-2, r. 1.1)
ENERGY STAR, central heat pump certification data (AHRI numbers), consulted September 30, 2026
Gouvernement du Québec, Rénoclimat: $500 grant for an HRV or ERV

The amounts shown are estimates; only the organizations in charge confirm the assistance granted.

Frequently asked questions

What is an add-on central heat pump?

Do I have to replace my furnace?

Not if it works well and its blower suits the heat pump’s airflow. We check this during the free estimate, along with the plenum width to choose the right coil.

My house is heated with gas: which grant?

The Hydro-Québec and Énergir dual-energy offer: up to $7,300 for a forced-air house or condo, total assistance capped at 80% of costs. It requires a contract with Énergir before installation and a 10-year commitment to Rate DT.

And with oil?

Chauffez vert (oil) closed on March 31, 2026, and the federal program on July 31, 2026. LogisVert remains possible according to Hydro-Québec’s FAQ: have your case confirmed at 1-833-396-1888. Rate DT accepts oil backup.

Can I combine LogisVert and Énergir’s grant?

No. The LogisVert guide excludes a second grant from Hydro-Québec or a government for the same equipment. With gas, the dual-energy offer is normally the higher one.

How long do I have to apply for LogisVert?

No later than 9 months after installation. Keep the detailed invoice and the system’s AHRI number.

Is R-410A banned?

We found no federal ban on these appliances in Canada. Manufacturers are moving to R-454B and R-32, which have a much lower global warming potential: 100 of our 125 add-on models already use them.

Who handles gas, oil or propane?

A partner holding the licence for this work. AirGreen installs the heat pump, the coil, the refrigerant lines, the electrical and the controls (RBQ 5645-9605-01: 15.8, 15.10 and 16).

What size heat pump do I need?

Often the same as your current air conditioner, but we confirm it at the visit: the home’s heat loss, the furnace blower airflow and the plenum width decide. Our add-ons range from 1.5 to 5 tons.

Do I need a permit?

It depends on the city. Our Permits and bylaws page gives the rules city by city for Greater Montréal.

What about the air exchanger, is there a grant?

Rénoclimat pays $500 for a certified HRV or ERV, with an EnerGuide evaluation before and after the work. Neither LogisVert nor the dual-energy offer covers it.

Can my old outdoor unit stay?

Replacing only an outdoor unit or only a coil is not eligible for LogisVert. The add-on is installed with its outdoor unit and its coil, designed to work together (AHRI number).