Repair: wall-mounted heat pump
Mini split and multi-zone: weak heating, ice, water, noise, error codes.
Mon. to Thu. 8 a.m. to 6 p.m. · Fri. 8 a.m. to 4 p.m.Installed by us or by someone else
Repair service · Air conditioning, ventilation and heating (HVAC) · Greater Montréal
Heat Pump, Air Conditioner and Heating Repair in Greater Montréal
Find the problem in three taps, see what’s normal and what’s covered, and know what you’ll pay. Then an AirGreen technician fixes it, with a final quote before any work.
7 units
heat pumps, air conditioners, electric furnaces, air exchangers, air handling
50 guides
a detailed page for each problem and each unit
154 brands
sold on airgreen.ca or already repaired by our technicians
RBQ 5645-9605-01
15.8 · 15.10 · 16
$5M insurance
Civil liability
Mon. to Thu. 8 a.m.–6 p.m.
Friday 8 a.m.–4 p.m. · no 24/7 service
5 regions
Montréal, Laval, Longueuil, South Shore, North Shore
01 · Our repair services
Our repair services throughout Greater Montréal, Laval, Longueuil, the South Shore and the North Shore
Seven units, each with its own repair page. Open the page, or start the diagnosis right here.
Repair: wall-mounted air conditioner
Cools poorly, refrigerant leak, drainage, filters, electrical.
Repair: air exchanger
HRV and ERV: airflow, motor, control board, core, humidity, odours.
02 · Troubleshooting guide
Pick the unit and what you’re seeing. The diagram shows where to look.
The guide tells you what it usually means, what you can check without opening the unit, and what the technician does.
1 · The unit
2 · What you’re seeing
Diagram · Wall-mounted heat pumpZones involved are highlighted
Safety first. Never open the unit. Burning smell or a breaker that trips again right away: switch the power off and call us.
Guide · Wall-mounted heat pump
Heats or cools poorly
Urgency levelBook soon
What it usually means
- Dirty indoor filters restricting airflow
- Outdoor unit blocked by leaves or snow
- Low refrigerant charge, often a sign of a leak
What you can check, without opening it
- Check the mode (heat or cool) and the set point
- Rinse the indoor filters with lukewarm water
- Clear the outdoor unit by hand, no tools
What the technician does
- Measures circuit pressures and temperatures
- Inspects the coil, fan and board
- Looks for the leak if the charge is low
A 2 to 3 degree gap from the set point is normal.
03 · Normal or not
Six things people report to us every week that are perfectly normal.
Tap a card to see why. It might save you a service call.
0 of 6 cards readNot normal, call us:burning smellbreaker that trips againwater leaking indoorsgrowing block of icegrinding metal noise
04 · Covered, not covered or normal
Three questions to know what to expect, before you even call.
1 · Who installed the unit?
2 · AirGreen labour warranty still active?
3 · The situation
Covered case by case
Part or operating defect on your AirGreen installation.
Customers with a labour warranty get priority. The technician confirms on site.
Travel fee applies to every visit, even under warranty.
| Water under the outdoor unit, steam during defrost | Normal |
| Inverter unit that never stops | Normal |
| Cracking (contraction, expansion) | Normal |
| 2 to 3 degree gap from the set point | Normal |
| Slight drain pump noise | Normal |
| Darkened fins, aged casing | Normal |
| Dirty unit, clogged drain | Not covered |
| Annual cleaning, filters | Not covered |
| Damage from third-party work | Not covered |
| Part or operating defect (AirGreen installation under warranty) | Covered |
| Refrigerant leak caused by our installation | Covered |
Summary for guidance only. Your terms, your contract and the manufacturer’s warranty take precedence.
05 · Your quote, line by line
Transparent pricing: what you pay, and when you find out.
Before starting any work, we always send a final quote. Tap a line to see when it’s confirmed.
Final repair quote
Typical layoutYou decidebefore any work starts · no surprises at the end
Line 01
Travel fee
It covers the technician’s trip and applies to every visit, even under warranty.
When you find out: when the visit is scheduled.
06 · Repair or replace
Most breakdowns can be repaired. The simulator tells you when it’s worth comparing.
1 · Which unit?
2 · How old is it?
3 · What kind of breakdown?
4 · Breakdowns in the last two years
5 · Refrigerant (outdoor unit label)
6 · Installed by AirGreen, warranty active?
Your profile · Wall-mounted heat pump
Repair, then keep an eye on it
Repair is still the right call. Note the date of this breakdown: if another follows, the question comes back.
RepairCompareReplace
Why the needle is there
Start with the warranty. A part or operating defect on an AirGreen installation under labour warranty is covered case by case. The travel fee applies.
If you compare with a new unit
For guidance only. The technician decides on site and gives you the final quote before acting.
07 · Your brand
Type your brand. We’ll tell you if our technicians already know it.
154 brands on our lists89 already repaired · 65 sold on airgreen.ca
Most requested
Browse A to Z
Already repairedSold on airgreen.ca
Result
Mitsubishi
Already repaired by our techniciansThis brand appears in our service call reports. Our technicians already know its units.
Mitsubishi repair pageIn your request: the model (on the label), a photo of the error code or a 20-second video of the noise.
Repair pages by brand:CarrierDaikinFujitsuGoodmanGreeLGLennoxMitsubishiMoovairPanasonicSanyoSenvilleTrane
See all 154 brands
Already repaired by our technicians (89)
Air Crystal · Aire-Flo · AirEase · Airwell · Aldes · Applied Comfort · Aston · AUX · Ayerkel · Beco · Bora · Brock · Bryant · Carrier · Celiera · Chigo · Climette · Coaire · Coleman · Comfort-Aire · ComfortStar · Compact Air · Confortmaison · Conforto · Costway · Ecobreath · Ecolo · Element · Épurair · Everest · Excel · Extreme · Fedders · Fellini · Fonko · Frigidaire · Galanz · GoldStar · Guardian · Haier · HEC · Hisense · ICP · Iglu · Jindo · Kanion · KeepRite · Kenmore · Kenville · Klimaire · KoolKing · KoolKong · Kreeg · Lincoln · Luxaire · Maestro · Maxi Air · Mestek · Mitsubishi · Multi Temp · Namflow · Napoleon · Noma · Nordik · North Cool · Oasis · Okyotech · Panasonic · PerfectAir · Philco · Polar Bear · PurePro · Quietside · Rousso · Ruud · Sanyo · Shinco · Slimair · SmartComfort · Supreme · Synergie · Tempstar · Thompson · Toshiba · Turbo Aire · Turcotte · Unionaire · Whirlpool · Yonan
Sold on airgreen.ca (65)
ACD · AirTempo · Amana · Ameristar · AprilAire · Arcoaire · Black & Decker · Bosch · Broan-NuTone · CanAir · Clean Comfort · Comfortmaker · Daikin · Direct Air · Durastar · Ecobee · effiQueenc · Elios · Emerson · Fantech · ForestAir · Friedrich · Fujitsu · GE · GeneralAire · Generallux · Giant · Goodman · Gree · GreenTek · Haxxair · Healthy Climate · Hitachi · Honeywell · Hydro Solar · Kinghome · Lennox · LG · Lifebreath · Manuflow · Midea · Moovair · Mysa · Novair · ProSync · Rheem · Robertshaw · Samsung · Senville · Sharp · Source 1 · Steffes · Stiebel Eltron · TCL · Thermolec · Thermoplus Air · Tosot · Trane · TTI Concerto · vänEE · Venmar · Willis · Windair · York · Zephyr
08 · Recent service calls
Some of our latest service calls in Greater Montréal
Real reports: the unit, the brand, the area. Tap a bar to filter.
By unit
By area
Repair of an Electric Furnace in Côte-des-Neiges–Notre-Dame-de-Grâce · AirGreen Climatisation & Chauffage AdminRepair of a Wall-Mounted Heat Pump in Deux-Montagnes · AirGreen Climatisation & Chauffage AdminRepair of a Wall-Mounted Heat Pump in Vaudreuil-Dorion · AirGreen Climatisation & Chauffage AdminService Call for an Electric Furnace in Kirkland · AirGreen Climatisation & Chauffage AdminRepair of a York Electric Furnace in Dollard-des-Ormeaux · AirGreen Climatisation & Chauffage AdminRepair of a Mitsubishi Electric Wall-Mounted Heat Pump in Lorraine · AirGreen Climatisation & Chauffage AdminRepair of a Trane Electric Furnace in Delson · AirGreen Climatisation & Chauffage AdminRepair of a Leto wall-mounted heat pump in Charlemagne · AirGreen Climatisation & Chauffage Admin
No recent call for this filter. We still serve your area.
09 · Season by season
What to watch right now, and what’s coming next.
Switching to heatFirst start in heating mode: check the mode and rinse the filters before the deep cold.Read the guide →Leaves on the outdoor unitClear them by hand. A blocked coil heats less well.Read the guide →First furnace start-upA slight dust smell can happen. A lasting burning smell: switch off and call.Read the guide →Air exchanger and humidityAdjust the humidity setting for winter and clean the filters.Read the guide →
Frost and defrostFrost is normal. A growing block of ice is not. Never break the ice.Read the guide →Snow around the unitKeep the outdoor unit clear, on top and underneath.Read the guide →Exchanger hoodsSnow or ice on the outdoor hoods: airflow drops.Read the guide →Breaker trippingOne try only. If it trips again, switch the power off and call us.Read the guide →
Pollen and debrisClear the outdoor unit before the warm season.Read the guide →Back to coolingTest cooling mode before the first heat wave.Read the guide →Condensate drainFirst warm days: watch for water under the indoor unit.Read the guide →Annual maintenanceA full cleaning once a year, whenever suits you.Read the guide →
Cools poorly in a heat waveFilters, outdoor unit, set point: check before calling.Read the guide →Water leaking indoorsTurn it off, put a container under it, call us.Read the guide →Clogged filtersRinse the indoor filters every 2 to 3 months.Read the guide →Outdoor unit noiseFilm 20 seconds for the technician.Read the guide →
10 · All 50 repair guides
One problem, one unit, one cell. Each cell opens its full guide.
Tap a column to highlight it.
11 · What we repair, and our licences
Professional refrigeration technicians: a heat pump involves three trades, and we hold all three.
| Unit | Repair | RBQ licences required |
|---|---|---|
| Wall-mounted and multi-zone heat pump | Yes | 15.8 · 15.10 · 16 |
| Central heat pump | Yes | 15.8 · 15.10 · 16 |
| Wall or central air conditioner | Yes | 15.8 · 15.10 · 16 |
| PTAC (through-the-wall unit) | Yes | 15.8 · 15.10 · 16 |
| Electric furnace | Yes | 15.8 · 16 |
| Air exchanger (HRV, ERV) | Yes | 15.8 · 16 |
| Gas or oil furnace, boiler, plumbing | No, not us | 15.1 to 15.5 · CMMTQ licences |
Three subclasses, one licence
15.8Ventilation: indoor unit, ducts
15.10Refrigeration: refrigerant circuit
16Electrical: power supply, components
Parts unavailable? Some brands are out of reach because parts aren’t available. We tell you before we come out.
12 · How a repair works
Six steps, no surprises. A well-prepared visit fixes it the first time.
Share your details
Through the form or by phone: the unit, what you’re seeing, the brand and model. A photo of the error code or a video of the noise helps a lot.
Get ready for the visit
0 of 9
All set. The technician arrives with what they need.
13 · Repair FAQ
Straight answers to the questions we get before every repair.
Yes. Our technicians work on a wide range of brands, installed by us or by another company. If parts for your brand can’t be found, we tell you before we come out.
Often, yes. Write the brand and model in your request. Some brands are out of reach because parts aren’t available: if so, we tell you before we come out.
The travel fee and current rate are confirmed when the visit is scheduled. On site, the technician diagnoses the problem and sends you a final quote before starting: you decide before the repair begins.
A part or operating defect on an AirGreen installation under labour warranty is covered case by case, and you get priority. The travel fee applies to every visit, even under warranty.
No. Cleaning, filters and a drain clogged by dirt are not covered by any warranty. If a cleaning solves the issue, the visit is billed as a cleaning.
Yes, an R-22 unit already installed can legally keep running. R-22 can no longer be imported into Canada as a refrigerant: servicing uses Canadian stock imported before January 1, 2020, or recovered and reclaimed R-22. The technician walks you through the options.
It depends on the age, the type of breakdown and how often it breaks down. The technician gives you the final repair quote. If replacement is worth comparing, ask for an estimate alongside it.
No. Gas or oil furnaces, boilers and plumbing fall under CMMTQ licences (15.1 to 15.5), which we don’t hold. We repair electric furnaces.
No. The offices answer Monday to Thursday, 8 a.m. to 6 p.m., and Friday, 8 a.m. to 4 p.m. A request sent in the evening or on the weekend is handled when we’re back.
Montréal, Laval, Longueuil, the South Shore and the North Shore, from our offices in Montréal and Boucherville.
Your full address, a number to reach you, the brand and model (on the outdoor unit label), a photo of the error code or a video of the noise, clear access to the units and an adult on site.
Yes. For businesses, buildings and air handling units, see our commercial services, including preventive maintenance and commercial refrigeration.
No question matches. Write to support@airgreen.ca or call 514 316-2973.
AirGreen · After-sales service
One breakdown, one technician, one final quote. All we need is your address.
Describe your unit in four steps or call us Monday to Friday. Montréal, Laval, Longueuil, South Shore and North Shore.
RBQ 5645-9605-01
15.8 Ventilation · 15.10 Refrigeration · 16 Electrical
$5M insurance
$5,000,000 civil liability coverage
Final quote first
Always sent before any work starts
Two offices
4951 Sainte-Catherine St. East, Montréal · 1370 Joliot-Curie St., Suite 712, Boucherville
Information checked on October 14, 2026. Sources: AirGreen Terms and Conditions (August 2026 version) · AirGreen 2026 Warranty · RBQ licence 5645-9605-01 · AirGreen service call log · lists of brands sold and already repaired · HRAI fact sheet on servicing R-22 systems (May 2026), based on the Ozone-depleting Substances and Halocarbon Alternatives Regulations (ECCC).
The suggested checks and the simulator are for guidance only and don’t replace a diagnosis. Never open a unit or touch any electrical component. No 24-hour service.