Older homes in Chatham and Wallaceburg
Aging furnaces, window ACs and small ducts. We replace tired equipment and fix airflow so the upstairs actually cools down in summer.
Chatham-Kent · Southwestern Ontario
Drier air in July, steady heat in January
Summers between Lake Erie and Lake St. Clair run long and muggy, so HVAC in Chatham-Kent has to deal with moisture as much as heat. We install and repair air conditioners and heat pumps that dry the air properly, and we upgrade heating in older homes in Chatham, Wallaceburg and the smaller towns across the municipality. You'll have a guaranteed price in writing before anything starts.
Voted Best Company 2019 to 2021 · Authorized Midea, Lennox, Kepler & Rinnai dealer, plus Goodman · 20+ years






A big municipality with a long cooling season. These are the facts behind our advice.
Two lakes and wide-open farmland bring muggy air from late spring well into September, so air conditioning works hard for months.
Winters here are gentler than in much of the province, which lets a cold-climate heat pump carry more of the heating load.
Entegrus delivers your power and Enbridge your gas where lines run, and both rates feed into our running-cost estimates.
Older homes in Chatham and Wallaceburg, small-town homes in Blenheim, Tilbury and Ridgetown, and farmhouses across the countryside.
Homes across the municipality need different things. Here's how we approach four common ones.
Aging furnaces, window ACs and small ducts. We replace tired equipment and fix airflow so the upstairs actually cools down in summer.
Variable-speed AC and heat pumps that run long and slow, wringing moisture out of the air instead of just chilling it.
Homes heated with propane or oil may qualify for the higher heat pump rebate tier, up to $7,500 based on heat pump size.
Houses and cottages near Erieau and the shoreline get outdoor units raised and placed where wind and damp do less harm.
Tell us about your house and we'll recommend the right system, with a guaranteed price and your rebate estimate.
Months of hard work in heat and humidity take a toll. Here are the problems we're called about, and the fixes.
Cool basements collect moisture when the AC never runs long enough to dry the air. We look at sizing, blower speed and drainage, and add dehumidification where the house needs it.
Months of heavy use wear down capacitors, contactors and fan motors. Our licensed refrigeration techs test each part and replace the weak ones before they quit on a hot day.
Rural air carries dust and chaff that blankets the coil. A clogged coil can't shed heat, so the unit runs hotter and costs more. We clean it and suggest a better spot if it sits downwind of a field.
Long cooling seasons push a lot of condensate through the drain, and a clogged trap or tired pump overflows. We clear the line, correct the slope and fit a float switch that stops the AC before water spills.
Older single-stage furnaces blast on and off. A two-stage, variable-speed furnace runs at low output most of the time, which is quieter and steadier, and it pairs well with a heat pump.
In this milder climate a cold-climate heat pump can carry most of your heating, with the propane furnace kept as backup. Propane-heated homes may qualify for the higher rebate tier.
Temperature is only half the picture between the lakes. A thermostat that also reads humidity, paired with a variable-speed system that can run a dehumidify mode, lets the AC keep working on moisture after the temperature target is met. Most people in Chatham and Tilbury find 22°C at lower humidity feels better than 20°C in sticky air, and it costs less to hold.
Describe the problem and we'll tell you what it usually is, what it costs to fix, and whether it's worth fixing.
With a cooling season this long, the AC and heat pump rows matter most here. Prices are starting points until a heat-gain calculation sets the size.
| Service | Typical price in Chatham-Kent |
|---|---|
| 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 |
| 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.
Recent Ontario jobs by our crews, not photographed in Chatham-Kent. They show the finish you can expect in a home in Blenheim or Dresden.






Four steps, one guaranteed price and no pressure.
Town or country, gas or propane, central air or window units. A quick call or the form gets things moving.
We calculate winter heat loss and summer heat gain, then look at ducts, drainage and the electrical panel.
Model numbers, rebate estimate and financing options, all in one guaranteed quote.
We install, test airflow and drainage, file rebate paperwork if you qualify and register the warranty.
Inverter heat pumps that can run slow for hours are the best moisture fighters we install. The furnaces below pair with them for the homes in Chatham and Wallaceburg that keep gas.

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

1.5 to 5 ton, rated to -30°C, quiet operation
Registered warranty

18,000 to 60,000 BTU outdoor units, wall-mounted heads
Registered warranty

96% AFUE, two-stage, variable-speed blower, 45,000 to 110,000 BTU
20-year limited heat exchanger warranty

97% AFUE, two-stage, variable-speed blower
20-year limited heat exchanger warranty
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
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
It sounds backwards, but an air conditioner that's a little smaller than the old one often leaves the house more comfortable in a humid July.
Cooling and drying happen on the same indoor coil. The coil only pulls water out of the air once it's cold and the air has been moving across it for a while. A big unit hits the thermostat setting in ten minutes and shuts off before the coil has done much drying, then starts again twenty minutes later. A correctly sized variable-speed unit runs for an hour at low speed, and that long, gentle cycle is what wrings the moisture out.
So we size from a heat-gain calculation that counts your windows, insulation and the direction the house faces, rather than matching the tonnage on the old label. Between Lake Erie and Lake St. Clair, that calculation is the difference between a cool house and a cool, clammy one.

A heat pump cools exactly like an air conditioner in summer, then heats your home for much of the winter. With milder winters than most of Ontario, it can take on a bigger share of the heating here than it would further north. Installed pricing depends on size and installation requirements.

Rated 4.5 on Google and voted Best Company 2019, 2020 and 2021 on HomeStars.
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
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 Chatham-Kent, with a written, guaranteed quote before any work starts.
Emergency service available evenings, weekends and holidays.
Every city gets the same licensed crews, guaranteed pricing and rebate paperwork. Pick yours for local details.
Yes, if it's sized correctly. An inverter heat pump runs longer at low speed, which pulls more moisture from the air than an oversized unit that shuts off quickly.
For most of the winter, yes. Winters here are milder than in much of Ontario and cold-climate models are rated to heat down to -30°C, though many homes keep a furnace as backup.
Many do. Homes heated by propane, oil, wood or electricity may qualify for up to $7,500 based on heat pump size, with pre-approval needed before installation.
Yes. We take emergency calls evenings, weekends and holidays, and you get a written price before any repair.
We serve Chatham, Wallaceburg, Blenheim, Tilbury, Ridgetown, Dresden, Erieau and the rural areas between them, working from our office in Stouffville.
Once a year, in spring before the heat arrives. We clean the coil, test the electrical parts, check the refrigerant charge and clear the condensate drain.
A central air conditioner in Chatham-Kent is priced by written quote after a heat-gain calculation sets the size. A cold-climate heat pump, which cools the same way and also heats, starts from $5,500 installed, and a high-efficiency furnace from $3,300. Installed pricing depends on size and installation requirements.
Page reviewed and updated October 27, 2026. Prices, rebates and program terms are checked at each update.
Home or business, tell us what's going on with your heating, cooling or hot water. We'll size it right, price it once, and show you every rebate you qualify for.