Cold-climate ducted heat pump
Midea EVOX G3
2 to 5 ton, inverter, R-454B, ENERGY STAR cold climate, rated to -30°C
Up to 12 years parts and labour on select systems
Sarnia · Lambton County
Sarnia HVAC Contractor for Lakeside Homes, Wind and Humidity
Equipment planned for Lake Huron weather, not just the thermostat
HVAC in Sarnia has to handle things many inland towns don't: wind off Lake Huron, sticky summer humidity and lake-effect snow piling up around the outdoor unit. We install and repair air conditioners, cold-climate heat pumps and furnaces with that weather in mind, from Point Edward to Bright's Grove. You get a written, guaranteed quote before any work begins.
- AC and heat pumps sized to remove humidity, not just heat
- Outdoor units raised and placed out of the worst wind
- Licensed refrigeration techs and TSSA-certified gas techs
- Emergency service evenings, weekends and holidays
- Bluewater PowerLocal hydro utility
- -30°CCold-climate heat pump rating
- Up to $7,500Heat pump rebate, if eligible
Our Brand Partners
AC repair in Sarnia and other lakeside problems we fix
Living near the water is great until the house feels damp and the outdoor unit takes a beating. Here's what we hear about most.
The house feels clammy even with the AC running
An oversized air conditioner cools the air fast and shuts off before it pulls the moisture out. We size from a heat-gain calculation and favour inverter or variable-speed equipment that runs longer at low speed, which dries the air as it cools.
The outdoor unit is rusting well before its time
Moisture, wind-blown grit and a unit sitting in a puddle all speed up wear. We set equipment on a raised stand or wall bracket, use corrosion-resistant mounting hardware, and rinse the coil at every tune-up.
Lake-effect snow buries the heat pump
A buried coil can't breathe and can't defrost properly. We mount the unit above the usual drift line, on the sheltered side of the house where possible, and leave a clear path for defrost water to drain away.
The cottage smells musty when you open it in spring
Damp air sitting all winter is the usual cause. A ductless heat pump with a dry mode, or an HRV or ERV that swaps stale air for fresh, keeps moisture in check while you're away.
Wind off the lake makes the furnace run nonstop
Wind pulls heat out through gaps and thin walls. We check the furnace size against a real heat-loss number, look for leaky ducts, and recommend two-stage or variable-speed equipment that runs steadily instead of blasting.
The AC quits in the middle of a July heat wave
Failed capacitors, burnt contactors and slow refrigerant leaks top the list. Our licensed refrigeration techs find the fault and give you a written price before any repair.
The Camlachie cottage sits empty midweek with the AC switched off
With the cooling off, lake humidity creeps into the furniture and the drywall, and you arrive Friday to a damp, heavy house. A modest setpoint or a humidity-based dry mode keeps moisture in check while you're away, and a thermostat you can reach from your phone lets you bring the place down to temperature before you pull in.
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.
Sarnia AC, heat pump and furnace prices to plan around
Raised stands and corrosion-resistant hardware are part of a lakeside install, and they're written into the quote rather than tacked on later.
| Service | Typical price in Sarnia |
|---|---|
| AC repair Diagnostic visit plus common parts such as capacitors, contactors and refrigerant leak repair | Quote after diagnosis |
| Central air conditioner, installed Lennox or Midea, sized from a heat-gain calculation | Written quote |
| Cold-climate heat pump, installed Midea EVOX G3 or Kepler, 2 to 5 ton, rated to -30°C | From $5,500 |
| Ductless mini split, one zone Midea or Kepler wall unit with outdoor unit and line set | Written quote |
| High-efficiency furnace, installed Lennox ML296V or Midea MGH96, 96% to 97% AFUE, two-stage variable-speed | From $3,300 |
| Furnace repair Diagnostic visit plus common parts such as ignitors, flame sensors and capacitors | Quote after diagnosis |
Installed pricing depends on size and installation requirements, and every job gets a written, guaranteed quote. Qualifying cold-climate heat pumps can bring back up to $7,500 through the Home Renovation Savings Program, and financing runs 0% for 3, 6 or 9 months on approved credit.
Sarnia heating and cooling conditions, in short
Four local facts that change how we plan equipment for your home or cottage.
- WindLake Huron exposure
Homes along the shore and in Bright's Grove take wind straight off the water, which raises heat loss and affects where an outdoor unit should sit.
- HumidityMuggy summers
Summer moisture is the real comfort problem near the lake, so we size cooling to remove humidity as well as heat.
- Hydro and gasBluewater Power and Enbridge Gas
We use your Bluewater Power rates and Enbridge gas use to compare running costs before recommending a heat pump.
- HomesBungalows, lakeside homes, cottages
Post-war bungalows downtown, lakeside homes in Point Edward and cottages along the shore each need a different plan.
Air conditioning in Sarnia that handles humidity, not just heat
An air conditioner does two jobs: it lowers the temperature and it pulls water out of the air. In a dry climate the first job matters most. Beside Lake Huron, the second one decides whether you feel comfortable at 23°C or sticky at 21°C.
The fix is not a bigger unit. A bigger unit hits the thermostat setting quickly, shuts off and leaves the moisture behind. A correctly sized inverter AC or heat pump runs longer at lower speed, and that steady run time is what wrings out the humidity.
Placement matters just as much near the water. We keep the outdoor unit off the ground, away from downspouts and out of the strongest wind, with the refrigerant lines sealed and supported so they don't rattle in a storm.
- Heat-gain sizing that accounts for moisture as well as floor area
- Inverter and variable-speed options for long, quiet run cycles
- Raised stands or wall brackets above drift and puddle level
- Condensate drains checked so water leaves the house cleanly
How we plan a Sarnia HVAC install around the lake
Weather planning happens before install day, so the system works in year one and year fifteen.
- 1
Start with the house
Call or send the form with your address, the age of your equipment and whether it's a year-round home or a cottage.
- 2
Walk the lot
We check wind direction, drainage, snow load, the electrical panel and the gas line, then pick the best spot for each unit.
- 3
One guaranteed quote
You get a written price with model numbers, mounting details, rebate estimate and financing options.
- 4
Install and handover
We install, test humidity and airflow, register your warranty and file the rebate paperwork if you qualify.
Book heat pump installation in Sarnia with a guaranteed price
A cold-climate heat pump heats and cools from one outdoor unit, and the models we install are rated to keep heating down to -30°C. For a house on baseboards, oil or propane, that can mean lower bills and the higher rebate tier.
- Midea EVOX G3 and Kepler cold-climate heat pumps
- Rebate pre-approval filed before installation
- Up to 12 years parts and labour on select systems
- 0% financing for 3, 6 or 9 months OAC
Outdoor units, mounts and line sets from recent jobs
A few recent Ontario installs from our crews, showing the raised mounts and clean line work we bring to lakeside homes.
Cooling and heating equipment we install along the Sarnia shoreline
Inverter heat pumps for long, low-speed cycles that dry the air, and two-stage furnaces for the windy nights. Each comes with a registered warranty.
Ducted heat pump
Kepler cold-climate
1.5 to 5 ton, rated to -30°C, quiet operation
Registered warranty
Single and multi-zone
Midea ductless
18,000 to 60,000 BTU outdoor units, wall-mounted heads
Registered warranty
Gas furnace
Lennox ML296V
96% AFUE, two-stage, variable-speed blower, 45,000 to 110,000 BTU
20-year limited heat exchanger warranty
Gas furnace
Lennox EL297V
97% AFUE, two-stage, variable-speed blower
20-year limited heat exchanger warranty
Gas furnace
Midea MGH96
96.5% AFUE, two-stage, variable-speed, 60,000 to 120,000 BTU
Registered warranty, up to 12 years parts and labour on select systems
Gas furnace
Goodman GMVC96
Up to 96% AFUE, two-stage, variable-speed ECM blower, 40,000 to 120,000 BTU/h input
10-year parts and unit replacement limited warranties when registered online
What it costs, and how we keep it lower
Guaranteed pricing
Your quote is your final price. No surprise extras on the agreed scope of work.
Rebates up to $7,500
Cold-climate heat pumps may qualify through the Home Renovation Savings Program. We confirm eligibility and file the paperwork.
0% financing
Interest-free for 3, 6 or 9 months, or open loans from 2.99% on approved credit.
Up to 12 years parts and labour
Extended warranty on select systems when registered.
Want the real number for your home?
A guaranteed quote takes one visit. Rebate and financing options come with it.
What Sarnia 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
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!
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 Sarnia, 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 Sarnia, with a written, guaranteed quote before any work starts.
- ServingSarnia, 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 Sarnia
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
- LondonHVAC services
- St. ThomasHVAC services
- Chatham-KentHVAC services
- WindsorHVAC services
- LeamingtonHVAC services
- TillsonburgHVAC services
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- Owen SoundHVAC services
Frequently asked questions
Why does my Sarnia home feel humid with the AC on?
Most often the air conditioner is too big for the house. It cools quickly and shuts off before it removes enough moisture, so a correctly sized inverter unit usually feels drier at the same temperature.
Where should a heat pump go on a windy lakeside lot?
On the most sheltered side of the house, raised above typical snow drifts, with clear drainage underneath. We check wind direction and roof runoff before choosing the spot.
Do cottages along Lake Huron qualify for heat pump rebates?
It depends on the program terms. A year-round home heated by electricity, oil or propane may qualify for up to $7,500, while a seasonal cottage may not, so we confirm eligibility before installation.
Can a cold-climate heat pump handle lake-effect snow?
Yes, if it's mounted high enough and can drain its defrost water. The units we install are rated to heat down to -30°C.
Do you offer furnace repair in Sarnia?
Yes. Our TSSA-certified gas technicians repair gas furnaces and give you a written price before starting.
Is emergency HVAC in Sarnia available after hours?
Yes. We take emergency calls evenings, weekends and holidays. Call 1-647-694-5845 and we'll tell you when a technician can get there.
How often should a lakeside air conditioner be serviced?
Once a year, ideally in spring. We clean and rinse the coil, check the refrigerant charge and electrical parts, and look for early corrosion.
What does a new air conditioner cost in Sarnia?
A central air conditioner is priced in a written quote after a heat-gain calculation, since the size and the mounting decide the number. A cold-climate heat pump that cools and heats starts from $5,500 installed. Installed pricing depends on size and installation requirements, and the quote is guaranteed.
Page reviewed and updated October 27, 2026. Prices, rebates and program terms are checked at each update.