# Air Source Heat Pump Toronto | Toronto Heat Pump Pros > Air source heat pump in Toronto, ON. How ASHP works vs ground-source, ducted and ductless formats, cold-climate ratings. Call (647) 277-5401. URL: https://torontoheatpumppros.ca/air-source-heat-pump-toronto/ Ontario Rebates Up to $14,100 # Air-Source Heat Pumps Explained for Toronto Homes Last updated: October 23, 2026 Air-source heat pump technology, formats and cold-climate ratings, compared to ground-source geothermal. - ASHP vs ground-source comparison - Ducted and ductless ASHP formats - Cold-climate rated models only Written Manual J Load Calculation From $4,500 Request a Free Load Calculation + Quote [/contact/ →](/contact/) Call 24/7: (647) 277-5401 [tel:+16472775401 →](tel:+16472775401) Paperwork submitted5-day turnaroundNo subcontractors ![Air-source heat pump outdoor unit on a sheltered wall bracket beside a Mimico bungalow near the lake](/images/misc/lg-multi-zone-air-source-heat-pump-outdoor-unit-on.webp) **$9,600 installed** Mimico, Toronto \-30C Rated Cold Spec - 17+ Years Combined - Red Seal + TSSA + ESA + HRAI - Rebates to $14,100 - Mitsubishi + Daikin + Fujitsu Certified - 24/7 Emergency Repair Air-source heat pumps in Toronto pull heat out of outdoor air, even at -25C, and move it inside. In summer the cycle runs backwards and it’s your air conditioner. Nearly every heat pump in Toronto [/ →](/) is air-source. Ground-source geothermal needs drilling and costs far more. The question that matters for Toronto isn’t air-source or not. It’s whether the unit carries a real cold-climate rating. NEEP and NRCan listings tell you which ones do. ## How does an air-source heat pump work? A refrigeration cycle, the same one in your fridge. 1. **Outdoor coil** absorbs heat from the air. Even at -20C there’s usable heat in it. 2. The **inverter compressor** squeezes the refrigerant, raising its temperature. 3. The **indoor coil** releases that heat into your ducts or ductless heads. 4. An **expansion valve** drops the pressure and the cycle repeats. The **reversing valve** flips the direction for cooling. COP, the heat delivered per unit of electricity, runs near 3 in typical Toronto winter weather on a cold-climate unit and stays above 1 even in deep cold. ## Air-source or ground-source geothermal? | | Air-source (ASHP) | Ground-source (geothermal) | | --- | --- | --- | | Heat source | Outdoor air | Ground loop | | Site work | Pad or wall bracket | Drilling or trenching | | Toronto lot fit | Almost any lot | Hard on narrow or mature lots | | Typical cost | $4,500-$22,000 by format | Several times higher | | Cold performance | Excellent on cold-climate models | Excellent | Geothermal makes sense on big rural lots with access for a rig. On a Mimico or Leaside lot, the drilling quote usually ends the conversation. The Mimico owner on this page priced geothermal, walked away, and put in a two-head LG multi-zone with the furnace as backup instead. ## Which formats are there? - **Ducted central.** One outdoor unit, an air handler or coil on your ducts. See central ducted heat pumps [/central-ducted-heat-pump-toronto/ →](/central-ducted-heat-pump-toronto/) . - **Ductless multi-zone.** One outdoor unit, several indoor heads. See ductless heat pumps [/ductless-heat-pump-toronto/ →](/ductless-heat-pump-toronto/) . - **Single-zone mini-split.** One head for one room or suite. The format follows the house. The cold-climate rating follows Toronto. ## Why the cold rating matters more than the format A mild-climate ASHP and a cold-climate ASHP look identical on a pad. One holds 100% capacity at -15C and keeps running at -30C. The other loses 40-60% below -15C and leans on strip heat. Check NEEP’s ccASHP list and the extended capacity tables before anything else. Our full lineup is on cold-climate heat pumps [/cold-climate-heat-pump-toronto/ →](/cold-climate-heat-pump-toronto/) . ## Placement near the lake Lake wind off Humber Bay and the Bluffs blows straight into an outdoor coil and drifts snow over it. We mount higher, pick a sheltered wall, and turn the intake away from the prevailing wind so the unit defrosts less often. Air-source installs run across Etobicoke [/service-areas/etobicoke/ →](/service-areas/etobicoke/) , Mississauga [/service-areas/mississauga/ →](/service-areas/mississauga/) and the rest of the GTA. When you’re ready to price one, request the load calc [/contact/ →](/contact/) . The Problem ## What goes wrong with air-source in Toronto **1\. Unsure it works here** Many owners assume an air-source unit cannot heat a Toronto home in January. The wrong model can't. **2\. Rising gas and oil costs** Fuel bills keep climbing while a heat pump moves heat at roughly three times the efficiency of resistance heating. **3\. Confusing rebate rules** Equipment eligibility, audits and caps change by program, and it is easy to buy a unit that doesn't qualify. Ontario Rebate Stack ## How much can rebates take off the invoice? Two programs stack on eligible homes. We book the audits, fill both applications and submit them on your behalf. 40-60% of install cost is commonly offset. Program 1 ### Enbridge HER+ up to $7,100 Cold-climate heat pump replacing gas heat. Pre-retrofit audit first. Program 2 ### Home Renovation Savings Program $5,000-$10,000 By efficiency tier and household income. Listed equipment only. Combined ### Stacked total up to $14,100 Pre-retrofit audit $400-$600, refunded upon install. Post-audit after commissioning. 1. **1\. Pre-audit** booked before install day. Skip it and the file is usually dead. 2. **2\. Install** a NEEP / NRCan listed cold-climate model, sized by Manual J. 3. **3\. Post-audit + file.** We submit HER+ and HRSP for you and track the cheque. Rebates are "up to" amounts, depend on program terms, audits, equipment listing and household eligibility, and are never guaranteed. Full rebate breakdown [/ontario-heat-pump-rebate-2026/ →](/ontario-heat-pump-rebate-2026/) . ## Planning air-source? Start with the load calc. Free written Manual J, model numbers and the rebate math on one page. Then decide. Get Free Load Calc [/contact/ →](/contact/) (647) 277-5401 [tel:+16472775401 →](tel:+16472775401) Why Us ## What sets our air-source work apart 01 ### Straight ASHP vs geo advice We'll tell you when geothermal is worth it. In Toronto, it usually isn't. 02 ### Every ASHP format Ducted, ductless multi-zone and single-zone, all cold-climate rated. 03 ### Listed models only NEEP ccASHP and NRCan listed equipment that qualifies for rebates. 04 ### Lakeside know-how Wind and drift placement for Mimico, Long Branch and the Bluffs. How It Works ## How air-source works, step by step Standard turnaround is 5 business days from accepted quote to a running system, winter included. 1. 01 ### Pick the format Ducted central, ductless multi-zone or single-zone. The house decides. 2. 02 ### Check the cold rating NEEP and NRCan listings and capacity at -15C. The rating matters more than the format. 3. 03 ### Manual J sizing Heat loss at Toronto design temperature sets the tonnage and number of heads. 4. 04 ### Placement for wind + snow Raised and sheltered, intake turned off the prevailing wind on lakeside lots. 5. 05 ### Install + commission Standard 5 business days quote to running. Project Case Study ## Air-Source Heat Pump in Mimico, near Humber Bay Park ![Geothermal quote and calculator on a kitchen table](/images/misc/geothermal-quote-document-and-calculator-on-kitche.webp) Before ![Air-source heat pump on a sheltered bracket behind the Mimico bungalow](/images/misc/compact-air-source-heat-pump-on-sheltered-bracket-.webp) After Mimico, near Humber Bay Park Owner priced geothermal and walked away at the drilling quote. Installed a two-head LG multi-zone ASHP plus existing furnace backup instead; lake wind handled with a sheltered wall mount. Materials LG LMU-U multi-zone outdoor unit, 2 wall heads, sheltered wall bracket Home size 1,400 sq ft bungalow Turnaround 5 business days, 1-day install Installed price $9,600 installed Project brief illustrative of a typical job in this neighbourhood. Your price depends on your Manual J and site conditions. Our Work ## Recent air-source jobs around the GTA Click any photo to enlarge. Ground-source means drilling. Air-source doesn't. Mimico: 2-head LG multi-zone plus furnace backup. Same technology, ducted format. Defrost steam is normal at -10C. Proven Results ## Toronto homeowners on our air-source work Real installs across Toronto neighbourhoods. Rebate captures and winter performance in the owners' own words. > "No ducts, electric baseboards everywhere. Three heads later the baseboards stay off all winter and we have AC for the first time." KOKevin O., Scarborough Village$12,400 Fujitsu 3-head multi-zone > "They tested the ducts before quoting and added an upstairs return. First summer the bedrooms aren't 4 degrees hotter than the kitchen." GHGreg H., Unionville, Markham$17,800 Carrier 4-ton central ducted > "Converted our Rosedale home from oil to Mitsubishi Hyper-Heat in October. Two winters, zero backup heat needed. Enbridge HER+ Oil-to-HP bonus came through at $7,100 and HRSP added $4,800. Combined covered 65% of the project." DKDaniel K., Rosedale$18,500 Mitsubishi Hyper-Heat 4-ton + oil tank removal Reviews shown are from customer projects. Individual results and rebate amounts depend on program terms and household eligibility. Direct Answers ## Air-Source Heat Pump Toronto FAQ Still have a question? Phone answered 24/7. Written answers via the form within one business day. (647) 277-5401 [tel:+16472775401 →](tel:+16472775401) Ask in writing [/contact/ →](/contact/) What is an air-source heat pump? A system that pulls heat from outdoor air, even at -25C, and moves it indoors using a refrigeration cycle. In summer the reversing valve flips it to air conditioning. Nearly every heat pump in Toronto is air-source. Air-source or ground-source geothermal? Geothermal is efficient but needs drilling or trenching, which on Toronto lots is expensive and disruptive. A cold-climate air-source heat pump gets most of the efficiency for a fraction of the cost. Do air-source heat pumps work at -25C? Cold-climate models do. They hold full rated capacity at -15C and keep running to -30C. Mild-climate models do not, which is where the bad reputation comes from. Ducted or ductless air-source? Ducted if you have good ductwork. Ductless multi-zone if you have radiators, baseboard or no ducts. Both are air-source, and both need a cold-climate rating for Toronto. What is COP? Coefficient of performance: units of heat out per unit of electricity in. A cold-climate ASHP often runs near 3 in typical Toronto winter weather and stays above 1 in deep cold. How much does an air-source heat pump cost? $4,500-$22,000 installed before rebates, depending on format. Single-zone sits at the low end, cold-climate 4-ton central at the high end. Keep Exploring ## Related Services ![Cold-climate heat pump outdoor unit running in deep snow on a raised stand behind a Forest Hill brick home](/images/misc/cold-climate-heat-pump-outdoor-unit-running-in-dee.webp) From **$14,000** ### Cold-Climate Heat Pump Toronto Heat pumps that keep 100% capacity at -15C and keep running at -30C. The models that actually work in Toronto. View details [Cold-Climate Heat Pump Toronto →](/cold-climate-heat-pump-toronto/) ![Central heat pump outdoor unit on a pad beside a two-storey Unionville detached house](/images/misc/carrier-central-heat-pump-outdoor-unit-on-concrete.webp) From **$10,000** ### Central Ducted Heat Pump Toronto Whole-home central heat pumps on existing ductwork, with a duct and static pressure check first. View details [Central Ducted Heat Pump Toronto →](/central-ducted-heat-pump-toronto/) ![Ductless heat pump wall head above a window in a Victorian Toronto living room with the original radiator below](/images/misc/white-ductless-heat-pump-wall-head-mounted-above-w.webp) From **$8,000** ### Ductless Heat Pump Toronto Multi-zone ductless heating and cooling for Toronto homes on radiators, boilers or baseboard. View details [Ductless Heat Pump Toronto →](/ductless-heat-pump-toronto/) GTA Coverage ## Air-Source near you Same crews, same 5-day turnaround. Air-Source is booked most often in these service areas. Heat Pump EtobicokeMimico, The Kingsway, Humber Bay ShoresView area [/service-areas/etobicoke/ →](/service-areas/etobicoke/) Heat Pump MississaugaPort Credit, Erin Mills, StreetsvilleView area [/service-areas/mississauga/ →](/service-areas/mississauga/) ![](/images/hero/toronto-brick-semi-detached-house-at-dusk-in-light.webp) 24/7 phone. Same-day no-heat dispatch. ## Ready to price air-source? Free written Manual J, model numbers and an installed price for air-source heat pump in Toronto. We file the rebate paperwork. Request a Free Load Calculation + Quote [/contact/ →](/contact/) Call 24/7: (647) 277-5401 [tel:+16472775401 →](tel:+16472775401) - Rebate paperwork submitted for you - Workmanship warranty + manufacturer parts coverage - Red Seal, TSSA, ESA, HRAI in-house