Source 1 BP4000MT Humidifier | Installation in Montreal, Laval, Longueuil, South Shore and North Shore
Is it the right size for your home?
It puts 17 gallons of water a day into the air, enough to humidify about 2,000 sq ft (our estimate). Pick your home's living area.
It's the right size.
For a 900 to 1,500 sq ft house, it's within its range. It will run at part load on ordinary days and keep a reserve for the coldest days.
AirGreen estimate. Johnson Controls (Source 1) publishes no area for this model. For an average-construction home, we count 120 sq ft per gallon a day, the ratio in AprilAire's and Lennox's tables. Older or leaky house: go one size up; our estimator confirms it on site.
What it does, in numbers
Output: manufacturer's spec (17 gal/day).
What you should know about this one
Published, verifiable figures, not brochure claims.
17 galWhat it produces per day, at full output
About 64 litres of water turned into humidity in 24 hours. The control runs it to match the humidity you set: it rarely runs flat out, except in very cold weather.
Heat pumpBehind a heat pump, it produces less
It evaporates water from a pad using the heat of the air coming off the furnace. A heat pump blows cooler air, so it evaporates less. With a heat pump, talk to our estimator: depending on the manufacturer, we connect it to hot water or suggest a steam model instead.
0 drainIt evaporates all its water
Johnson Controls says it uses 100% of the water it takes in and holds less than 8 oz: no drain to connect.
60%Behind a heat pump
According to the manufacturer, with a heat pump it evaporates about 60% of its rated capacity.
10 × 12¾ in.The opening it needs
A 10 × 12¾ in. opening and a 6 in. round bypass duct.
Source 1Johnson Controls OEM parts
Source 1 is Johnson Controls' OEM parts brand (York, Luxaire, Coleman). The MY version is its identical York-branded twin.
ControlThe control that comes with it
Manual humidistat (the M in MT).
UpkeepWhat gets replaced, and when
S1-HUPAD45 water panel.
35%The humidity to aim for in winter, at most
At −7 °C, no more than 35%; at −18 °C, no more than 25%. Above that, the moisture condenses on the windows. The control adjusts for you if it has an outdoor sensor.
5 yearsThe parts warranty
Parts are covered for 5 years by the manufacturer. We register the warranty in your name at start-up.
What it needs on site
Our estimator checks the ducts and the water supply before ordering.
Complete spec sheetData and cited sources
- Brand
- Source 1
- Model
- S1-BP4000MT
- Type
- Bypass, drainless
- Output
- 17 US gal/day
- Control included
- Manual humidistat (the M in MT).
- Upkeep
- S1-HUPAD45 water panel.
- Living area
- 2,000 sq ft (AirGreen estimate)
- Dimensions (L × D × H)
- 15.38 × 10.25 × 15.75 in
- Power supply
- 24 V
- Current
- 0.5 A
- Warranty — parts
- 5 years
Output, dimensions, electrical data and warranty: Source 1 manufacturer's data. Living area: AirGreen estimate, explained under « Your home ».
The next model down and up
Talk to an HVAC technician before you choose
We look at your heating system, the electrical panel, the water supply and the drain, and give you an installed price.
Source 1 BP4000MT: Johnson Controls' drainless bypass humidifier
The BP4000MT mounts on the plenum of a forced-air furnace, with a bypass duct. It puts out 17 gal/day and suits about 2,000 sq ft by our estimate. Source 1 is the OEM parts brand of Johnson Controls (York, Luxaire, Coleman).
No drain to connect
According to Johnson Controls, the BP4000MT uses 100% of the water it takes in and holds less than 8 oz in the unit. It's the model to install when there's no drain near the furnace. It has the same cabinet and the same 10 × 12¾ in. opening as the BP6000MT, which does need a drain. The M in MT means it ships with a manual humidistat.
What to know
It needs a 6 in. round bypass duct, a water supply and a 24 V supply for the valve (0.5 A), but no drain. Behind a heat pump, the manufacturer says it evaporates about 60% of its rated capacity. The manufacturer publishes no replacement interval for the S1-HUPAD45 water panel; it gets changed when it's scaled.
Installing it with AirGreen
Every installation starts with a visit: our estimator looks at the furnace, the electrical panel, the water line and the space around the plenum, then gives you a quote for the BP4000MT installed. We serve Montréal, Laval, Longueuil, the South Shore and the North Shore. Phone: 514 316-2973.