We had a heat pump/AC unit installed by EHI, on time, on budget, great workmanship. Julian and team were knowledgeable and courteous. Dustin communicated well and is managing our government rebate for the new efficient system. Thank you Team!
London · Middlesex County
Heating and Cooling in London, Ontario: Switch to a Heat Pump With Real Numbers
Run the numbers before you rip anything out
Shopping for HVAC in London with an oil tank, an aging boiler or a 25-year-old furnace in the basement? We compare a cold-climate heat pump, a hybrid furnace and heat pump setup, and a straight furnace swap using your actual fuel bills and the rebates you may qualify for. Then you get one guaranteed price in writing.
- Running cost comparison built from your own bills
- Oil and propane homes may reach the top rebate tier
- Hybrid setups that keep gas as cold-snap backup
- 0% financing for 3, 6 or 9 months OAC
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London HVAC contractor advice: oil, boiler, furnace or heat pump?
Older London homes rarely have one simple heating system. A house in Old South might have a boiler and radiators, a window AC upstairs and baseboards in the back addition. A post-war bungalow might still burn oil. Each one changes the answer.
So we start with math, not a sales pitch. We take your last year of oil, propane or gas use, convert it to the heat your home actually needs, and compare that to what a heat pump would draw from London Hydro. Then we subtract the rebate you're likely to get and add the cost of any electrical work.
A hybrid system is often the middle ground. A cold-climate heat pump does the heating for most of the year, and a high-efficiency gas furnace takes over below a switchover temperature you choose. You still get central air in summer from the same outdoor unit.
- Fuel use from your bills converted to a yearly heating load
- Manual J heat-loss calculation for the right size
- Panel capacity check and 240V circuit plan
- Rebate tier estimate based on how the home is heated today
HVAC services in London for every kind of older system
Pick the upgrade or repair you're weighing. Each page goes into equipment, pricing and how the install works.
Hybrid heat pump systems in LondonA heat pump plus a gas furnace, each running when it's cheapest.Heat pump installation in LondonCold-climate units rated to heat down to -30°C.Heat pump and air handler for oil homesAn all-electric option where there's no gas line or you want off fossil fuel.Ductless heat pumps for radiator homesCooling and heating with no ducts, room by room.Furnace installation in London96% to 97% AFUE two-stage, variable-speed Lennox and Midea furnaces.Furnace repair in LondonIgnitors, inducers, blowers and no-heat calls, with a price before work starts.Heat pump rebatesHow the Home Renovation Savings Program works and what we file for you.
Problems our HVAC company in London fixes in mixed-heat homes
Most of these start with a house that has had three or four heating systems over its life.
Oil delivery bills are eating your winter budget
A cold-climate heat pump with an electric air handler can replace the oil furnace outright. Homes heated by oil may qualify for the higher rebate tier, up to $7,500 based on size.
The addition runs on baseboards and the rest on a boiler
A ductless head in the addition covers heating and cooling there for far less hydro than the baseboards use, and the boiler keeps doing its job in the original house.
Your furnace and AC are both from the 1990s
Replacing them together lets you pair a heat pump with a new high-efficiency furnace in one visit, on one coil, with one warranty registration.
You can't tell if a heat pump will save money
We lay out your current fuel cost next to the projected hydro cost, before and after rebates, so you can see the payback instead of guessing.
The 100-amp panel has no room for a heat pump
Our ESA-licensed electrical work covers the 240V circuit and, where it's needed, a panel upgrade, priced right in the same quote.
The second floor of an Old North two-storey never warms up
Usually it's too few returns or leaky ducts in the walls. We test static pressure, seal what we can reach and add a return or a ductless head where the ducts can't keep up.
Sound familiar?
Describe the problem and we'll tell you what it usually is, what it costs to fix, and whether it's worth fixing.
Heat pump and furnace jobs from our portfolio
Recent Ontario installs by our crews. These show the kind of finish you can expect in a London home, not photos taken there.
London heat pump conversion cost guide
What each upgrade path replaces, where pricing starts, and which rebate tier usually applies.
| Upgrade path | Usually replaces | Installed from | Rebate to expect |
|---|---|---|---|
| Cold-climate ducted heat pump | Old furnace and central AC | From $5,500 | Depends on current heat source |
| Heat pump with electric air handler | Oil or propane furnace | Quote | Higher tier, up to $7,500 if eligible |
| Hybrid heat pump and gas furnace | Aging gas furnace and AC | Quote | Gas-heated tier, commonly up to $2,000 |
| Ductless or multi-zone heat pump | Baseboards, window units, boiler-only homes | Quote | Depends on current heat source |
| High-efficiency gas furnace only | Old gas furnace | From $3,300 | Not a heat pump rebate |
| Rinnai tankless water heater | Rented or aging tank | From $3,300 | Ask us |
Installed pricing depends on size and installation requirements, and every quote is guaranteed in writing. Rebates come from the Home Renovation Savings Program, require pre-approval before installation, and program terms can change. Financing runs 0% for 3, 6 or 9 months, or open loans from 2.99% OAC.
From Old East Village to Lambeth: London areas we cover
Century homes in Old South and Old North, post-war streets in Westmount and newer builds in Byron and Hyde Park all get the same careful planning. We work in:
- Old South
- Old North
- Old East Village
- Byron
- Masonville
- Westmount
- Hyde Park
- Lambeth
- Whitehills
- Summerside
Why Ontario homes and businesses choose EHI Heating And Cooling
20+ years in Ontario homes
We've installed through more January cold snaps and July heat waves than we can count. That experience shows up in the sizing, the ductwork and the little details.
Voted Best Company 2019 to 2021
HomeStars Verified. Our reviews come from real Ontario homeowners and business owners.
Authorized Midea, Lennox, Kepler and Rinnai dealer, plus Goodman
Factory-backed equipment, factory-backed warranties, and techs trained on the gear we install. We install and service Goodman too.
Guaranteed final pricing
The number on your quote is the number on your invoice. We may also beat comparable reputable quotes by up to 10%.
Rebate paperwork handled
Pre-approval, heat-loss calculation and documentation for the Home Renovation Savings Program. You just sign.
Licensed, certified crews
TSSA-certified gas technicians, licensed refrigeration techs and ESA-licensed electrical work on every job.
Ready when you are
Call us or send the form. Quotes are free, guaranteed and come with your rebate estimate.
Want your heat pump numbers on paper?
Send us your address and a recent fuel bill. We'll come back with options and a guaranteed price.
What London homeowners can expect: our customers in their own words
Rated 4.5 on Google and voted Best Company 2019, 2020 and 2021 on HomeStars.
4.5Google rating from verified customers
Replaces our AC with a new heat pump in Ottawa and the whole experience was outstanding. From the first call, Dustin was incredibly responsive and communicated clearly every step of the way. He cut through all the usual sales fluff and got straight to what mattered — options, costs, timelines, and what made the most sense for our home. They addressed every concern I had, explained the details discussed my technical questions, and handled the installation quickly and professionally. The quality of the work is excellent, everything was done cleanly, and the system has been running perfectly since. Pricing was fair and transparent, and there were no surprises. It’s rare to find a company that combines speed, honesty, and solid workmanship like this. Highly recommended.
Recently got a shiny new heat pump installed. Went very well, nice unit and it works soooo quietly. These fine folks were very easy to deal with, professional and thourough. Would highly recommend.
Efficient Home Improvements truly went above and beyond. Our furnace failed on Christmas Eve in Ottawa, and their team stayed up late (3:00am) that night to replace it. Their responsiveness, professionalism, and dedication during the holidays were exceptional. The work was completed efficiently, and everything was explained clearly. It’s rare to find a company willing to sacrifice their own holiday time to ensure a customer’s home is warm and safe. I highly recommend Efficient Home improvements to anyone in need of reliable and compassionate service.
I recently had a new furnace and tankless water heater installed by this company. Excellent service by both office and technicians , I highly recommend!
The Installers were great.. Got in and got the job done..the furnace works amazing compared to the old one !!! Need a furnace..A/C water tankless system..there your guys!!!!
Had a tankless water heater installed and couldn’t be happier. The installation was quick, professional, and the system works great — endless hot water and more efficient than my old tank. Highly recommend!
Dustin and his team were really responsive and helpful in getting us a new heat pump to replace our broken AC unit. The team went above and beyond helping us through the process and answering other questions about the house we recently moved in to. I would highly recommend Efficient Home Improvements for any of your HVAC needs.
Licensed HVAC Contractor · Serving Ontario for 20+ Years
Proudly Serving London, Ontario
EHI Heating And Cooling has kept Ontario homes and businesses comfortable for more than 20 years. Our licensed crews come to your home or business anywhere in London, with a written, guaranteed quote before any work starts.
- ServingLondon, Ontario
- Phone1-647-694-5845
- Emailefficienthomecomfort@gmail.com
Business Hours
- Monday8:00 AM to 8:00 PM
- Tuesday8:00 AM to 8:00 PM
- Wednesday8:00 AM to 8:00 PM
- Thursday8:00 AM to 8:00 PM
- Friday8:00 AM to 8:00 PM
- Saturday8:00 AM to 8:00 PM
- Sunday10:00 AM to 5:00 PM
Emergency service available evenings, weekends and holidays.
We also serve communities near London
Other cities in Southwestern Ontario we serve
Every city gets the same licensed crews, guaranteed pricing and rebate paperwork. Pick yours for local details.
- Kitchener-WaterlooHVAC services
- CambridgeHVAC services
- GuelphHVAC services
- BrantfordHVAC services
- WoodstockHVAC services
- StratfordHVAC services
- St. ThomasHVAC services
- SarniaHVAC services
- Chatham-KentHVAC services
- WindsorHVAC services
- LeamingtonHVAC services
- TillsonburgHVAC services
- IngersollHVAC services
- Owen SoundHVAC services
Frequently asked questions
Is it worth switching from oil to a heat pump in London, Ontario?
For most oil-heated homes, yes. Oil usually costs more per unit of heat than a cold-climate heat pump, and oil-heated homes may qualify for the higher rebate tier of up to $7,500.
How does a hybrid system work in an older London house?
A hybrid system is a heat pump paired with a gas furnace that share one thermostat. The heat pump heats and cools most of the year, and the furnace takes over in deep cold.
Will my London Hydro bill go up after a heat pump?
Yes, your electricity use goes up. Your oil, propane or gas bill drops or disappears, and we show you both sides of that trade before you commit.
How much do London HVAC companies charge to install a heat pump?
Our cold-climate heat pumps start from $5,500 installed before rebates. Final pricing depends on size, ductwork and electrical needs, and the quote is guaranteed.
Does my London home need a panel upgrade for a heat pump?
Sometimes. Many homes have room for the 240V circuit, but older 60 or 100-amp panels may need an upgrade, which we check during the assessment.
Can you still fix my old furnace in London while I decide on a heat pump?
Yes. Our TSSA-certified gas technicians repair gas furnaces, including evenings, weekends and holidays for emergencies, and you see a written price first.
Page reviewed and updated October 27, 2026. Prices, rebates and program terms are checked at each update.