
Lennox ML296V
96% AFUE, two-stage, variable-speed blower, 45,000 to 110,000 BTU
20-year limited heat exchanger warranty
Woodstock · Oxford County
We'll tell you when a repair makes more sense
When you call about HVAC in Woodstock, you usually want one answer: is it worth fixing, or is it time to replace? We give you a straight one on furnaces, air conditioners and heat pumps, with both prices in writing. Families from Northdale to Southside Park get equipment that lasts and a quote that doesn't change.
Voted Best Company 2019 to 2021 · Authorized Midea, Lennox, Kepler & Rinnai dealer, plus Goodman · 20+ years





A furnace or air conditioner rarely fails all at once. It drops hints first: a new noise, a part that keeps failing, a bill that creeps up. The hard part is knowing when another repair is money well spent and when it's money gone.
We look at three things. First, the age of the equipment and the state of the expensive parts, like the heat exchanger in a furnace or the compressor in an AC. Second, what the repair costs next to a new system. Third, what the old unit will cost to run over the next several years compared with a new one.
If a modest repair buys you several more good winters, we'll say so. If the heat exchanger is cracked, or the AC still runs on R-22 refrigerant, which has been phased out in Canada, we'll explain why repairing it stops making sense.

Busy households need heat and cooling that just works. These are the common breakdowns and what we do about each.
A dirty flame sensor, a blocked condensate line or a pressure switch fault is the usual cause. Our gas technicians track it down on the first visit and fix it once you've approved a written price.
Low refrigerant, a dirty outdoor coil or a weak capacitor are the usual suspects. We test the charge, look for leaks and tell you plainly whether the unit is worth fixing.
We inspect it now, before the cold, and hand you a repair estimate and a replacement price. That way a January breakdown doesn't catch you without a plan.
When parts keep failing, we add up what you've spent and what's likely to go next, then compare it with a new two-stage furnace. You decide with the numbers in front of you.
Maybe. For a gas-heated home, a hybrid setup often makes sense when your AC also needs replacing. If the numbers don't work for your house, we'll tell you.
Often it's a return air or duct balance problem, not the AC itself. We check airflow to each room and fix the cause before we suggest any new equipment.
You don't have to replace both. If the furnace blower can move the air a new coil needs, we match a new AC or a cold-climate heat pump to the furnace you have and leave it at that. We check the blower type and the coil fit first, then show you the price for the AC alone next to the price for a heat pump, which can bring a rebate on a gas-heated home.
Describe the problem and we'll tell you what it usually is, what it costs to fix, and whether it's worth fixing.
Repairs are quoted after diagnosis, because a capacitor and a blower motor are different jobs. New equipment starts at the figures below, and a guaranteed quote replaces them once we have seen your house.
| Service | Typical price in Woodstock |
|---|---|
| Furnace repair Diagnostic visit plus common parts such as ignitors, flame sensors and capacitors | Quote after diagnosis |
| AC repair Diagnostic visit plus common parts such as capacitors, contactors and refrigerant leak repair | Quote after diagnosis |
| High-efficiency furnace, installed Lennox ML296V or Midea MGH96, 96% to 97% AFUE, two-stage variable-speed | From $3,300 |
| 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 |
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.
Pick the service that matches your situation. Each page explains costs and how the work gets done.
Starting prices for common jobs. Your written quote replaces these once we've seen your home.
| Job | When it makes sense | Installed price |
|---|---|---|
| High-efficiency gas furnace | Furnace over 15 years old or needing a major part | From $3,300 |
| Cold-climate heat pump | AC and furnace both near the end, or a home without gas | From $5,500 |
| Central air conditioner | Adding cooling or replacing an old AC | Quote |
| Hybrid heat pump and furnace | Gas home that wants to burn less gas | Quote |
| Furnace or AC repair | Equipment that's otherwise in good shape | Quote |
| Rinnai tankless water heater | A rented tank or an aging water heater | From $3,300 |
Installed pricing depends on size and installation requirements, and every quote is guaranteed. Heat pumps may qualify for rebates through the Home Renovation Savings Program: up to $7,500 for homes on electric, oil or propane heat, and commonly up to $2,000 for Enbridge gas homes. Pre-approval is needed before installation and program terms can change. You can also pay over 3, 6 or 9 months at 0%, or use an open loan from 2.99% OAC.
A few Ontario jobs from our crews, not photographed in Woodstock. Expect the same tidy work in your furnace room.




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.
HomeStars Verified. Our reviews come from real Ontario homeowners and business owners.
Factory-backed equipment, factory-backed warranties, and techs trained on the gear we install. We install and service Goodman too.
The number on your quote is the number on your invoice. We may also beat comparable reputable quotes by up to 10%.
Pre-approval, heat-loss calculation and documentation for the Home Renovation Savings Program. You just sign.
TSSA-certified gas technicians, licensed refrigeration techs and ESA-licensed electrical work on every job.
Call us or send the form. Quotes are free, guaranteed and come with your rebate estimate.
Nothing exotic. These are the furnaces and heat pumps we install most, chosen because parts are easy to get and the warranties run long.

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

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
We book visits in Woodstock and around Oxford County, from Eastwood and Sally Creek to Innerkip and Beachville, including:
Book a visit. You'll get both prices in writing and an honest recommendation.
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 Woodstock, 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.
It's usually worth repairing if it's under about 15 years old, the heat exchanger is sound and the repair is a small share of a new furnace's cost. We price both options so you can compare.
Our high-efficiency gas furnaces start from $3,300 installed, and installed pricing depends on size and installation requirements. You get a guaranteed quote first.
Sometimes. It makes the most sense when your AC also needs replacing, and a hybrid setup keeps the furnace for the coldest days; we show you the numbers either way.
Yes. Our licensed refrigeration technicians repair central air conditioners and heat pumps, and you see the price before work begins.
Yes. We offer 0% financing for 3, 6 or 9 months and open loans from 2.99% OAC, subject to lender approval.
Yes. We book visits in Woodstock and nearby Oxford County communities, working from our office in Stouffville.
A fall tune-up, a fresh filter and fixing the one part that is actually failing. That buys time on a furnace that is tired but sound. It cannot make a cracked heat exchanger safe, so if the inspection finds one, we tell you and price the replacement instead.
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.