Lennox central air conditioners
Single-stage, two-stage and variable-speed condensers in 1.5 to 5 ton. Quiet, efficient and built for Ontario summers.
More on Lennox central air conditionersAC Installation & Replacement
Air Conditioner Installation and Replacement in Ontario
Sized for Real Ontario Summers
EHI handles central air conditioner installation and replacement across Ontario with Lennox and Midea equipment, sized from a heat-gain calculation, not a guess.
- Guaranteed installed price, no surprise extras
- Lennox and Midea central AC, authorized dealer
- Heat-gain sizing and a matched evaporator coil on every job
- Option to replace your AC with a heat pump and claim up to $7,500 back
Voted Best Company 2019 to 2021 · Authorized Midea, Lennox, Kepler & Rinnai dealer, plus Goodman · 20+ years
Our Brand Partners
Air conditioning problems a new central AC fixes
Most air conditioner replacement calls start with one of these. Here is what is usually behind it, and what we do.
Your AC is 15 years old and the repair quote is scary
Once a compressor or evaporator coil fails on an older unit, the repair often costs a third of a new system. We give you both numbers, repair and replace, so you can decide with real figures. See our AC repair and maintenance page if you want to try a fix first.
The upstairs bedrooms never cool down
Nine times out of ten the old unit was sized off square footage, or the ductwork starves the second floor. We run a heat-gain calculation, check static pressure in the ducts, and often recommend a two-stage or variable-speed system that runs longer at low speed and pushes cool air where it is needed.
Your hydro bill jumps every summer
A unit from the early 2000s can use far more electricity per hour of cooling than a current model. SEER2 is the rating that matters. The higher the number, the less hydro you burn for the same cooling.
The outdoor unit rattles loud enough to bother the neighbours
Worn compressor mounts and tired fan motors get loud. New Lennox and Midea condensers run quietly enough that you forget they are there, which your neighbours will appreciate too.
The AC died in a heat wave and you have no cooling
We carry common sizes and can often replace a central air conditioner within days, not weeks. Call 1-647-694-5845 and we will give you the soonest install date.
You are wondering if a heat pump makes more sense
It often does. A cold-climate heat pump cools exactly like an AC and also heats your home, and a qualifying model can bring back up to $7,500 through the Home Renovation Savings Program. Read about heat pump installation before you buy a plain AC.
Someone quoted you a new condenser without touching the furnace coil
The evaporator coil inside your furnace must match the new outdoor unit, or you lose efficiency and risk the warranty. Every EHI air conditioner installation includes a matched coil and a new line set where needed.
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.
Central air conditioning systems we install
We are an authorized dealer for Lennox and Midea and we install Goodman too, so you get factory-backed equipment and warranties registered in your name.
Goodman central air conditioners
Goodman GSXH5 condensers up to 15.2 SEER2 in 1.5 to 5 ton. A dependable, fairly priced choice, matched to a coil that fits your furnace.
More on Goodman central air conditionersMidea inverter air conditioning and heat pumps
Midea EVOX G3 inverter systems use R-454B low-GWP refrigerant and modulate output to match the heat load, so they hold a steady temperature without cycling on and off.
More on Midea inverter air conditioning and heat pumpsCold-climate heat pump instead of an AC
Same cooling as a central AC, plus heating rated to -30°C. From $5,500 installed, and rebate-eligible. Pairs with your gas furnace as a hybrid system.
More on Cold-climate heat pump instead of an ACDuctless for homes without ducts
Bungalows, additions and condos with no ductwork get a Midea single-zone or multi-zone ductless system instead.
More on Ductless for homes without ductsNot sure which option fits your home?
Tell us about your house and we'll recommend the right system, with a guaranteed price and your rebate estimate.
What is included in an EHI air conditioner installation
- Heat-gain calculation (Manual J style) using your square footage, windows, insulation and sun exposure
- Recovery of the old refrigerant and removal of the old condenser and coil by licensed refrigeration technicians
- New matched evaporator coil installed on your furnace or air handler
- New insulated copper line set, or a pressure test of the existing one if it is the right size and clean
- Level composite pad or wall bracket, with clearance for airflow and snow
- 240V circuit, disconnect and whip checked or replaced by ESA-licensed electricians
- Vacuum to 500 microns, refrigerant charge weighed in, and a condensate drain with trap
- Thermostat set-up, permits where required, and warranty registration with the manufacturer
How central AC installation works with EHI
- 1
Free assessment and guaranteed quote
We look at your furnace, ductwork, electrical panel and the spot for the outdoor unit. Most homeowners have a guaranteed price the same day.
- 2
Sizing and equipment match
The heat-gain calculation sets the tonnage. Then we match the condenser, coil and blower so the system actually hits its SEER2 rating in your house.
- 3
Install day
A typical central air conditioner replacement takes four to six hours. New installs with a new line set and electrical take most of a day.
- 4
Commissioning and hand-over
We check superheat and subcooling, measure temperature drop across the coil, test the drain and show you the thermostat. Then we clean up.
- 5
Paperwork
Warranty registration is done for you. If you chose a heat pump, we also file the rebate documents.
Our work · 8 photos
Recent cooling installs
Real jobs by our licensed crews in Ontario homes. Tap a photo to see it full size.
SEER2, R-454B and the matched coil: what actually decides how your AC performs
SEER2 is the seasonal efficiency rating every new air conditioner sold in Canada carries. It replaced SEER with a tougher test that better reflects real ductwork. A higher SEER2 means lower hydro bills for the same cooling.
R-454B is the low-global-warming-potential refrigerant in the current generation of equipment, including the Midea EVOX G3. It needs properly rated line sets and tools, which is why licensed refrigeration techs should do the work.
The matched coil is the part most homeowners never see. The evaporator coil inside your furnace has to be sized and rated for the new outdoor unit. Mismatched coils are the most common reason a brand-new AC underperforms.
Central AC installation cost in Ontario
Installed pricing depends on size and installation requirements, like whether your line set and electrical can be reused. We quote a guaranteed final price before any work starts.
| System | Typical home | Installed from |
|---|---|---|
| Central air conditioner, single-stage (1.5 to 3 ton) | Bungalow or two-storey up to about 2,000 sq ft | Quote |
| Central air conditioner, two-stage or variable-speed (3 to 5 ton) | Larger two-storey homes, hot upstairs | Quote |
| Cold-climate heat pump replacing your AC (cools and heats) | Any home with ductwork, rebate-eligible | $5,500 |
| Ductless single-zone heat pump | Addition, basement, condo or cottage | $5,500 |
| Full furnace and AC replacement | Both units past their prime | Quote |
A cold-climate heat pump replaces your air conditioner and takes over most of your heating, and a qualifying model can bring back up to $7,500 through the Home Renovation Savings Program (up to $2,000 for Enbridge gas-heated homes). A plain AC does not qualify. 0% financing for 3, 6 or 9 months is available on either.
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.
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.
HVAC service across Ontario
We're a service-area business. Our crews come to your home or business, from the GTA to Northern Ontario. Don't see your town? Call, we probably cover it.
Toronto and York Region
Simcoe, Muskoka and cottage country
Hamilton and Niagara
Southwestern Ontario
Eastern Ontario
Serving Ontario from our Stouffville office
Find us on Google, get directions, or check our hours. Our crews travel to your home or business across the province.
EHI Heating And Cooling (Efficient Home Improvements)
- Phone
1-647-694-5845 - Email
efficienthomecomfort@gmail.com - Service area
All of Ontario. See the cities we serve
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 outside these hours.
- Office
4261 Bloomington Road, Whitchurch-Stouffville, ON L4A 3Y6
Frequently asked questions
How much does central air conditioner installation cost in Ontario?
Central air conditioner installation cost in Ontario depends on tonnage, efficiency level, and whether your line set, coil and electrical can be reused, so EHI quotes each home with a guaranteed final price. As a comparison, a cold-climate heat pump that cools like an AC and also heats starts at $5,500 installed, and may qualify for a rebate that a plain AC does not.
What size air conditioner do I need?
The right size comes from a heat-gain calculation, not square footage alone. As a rough guide, many Ontario homes up to about 2,000 square feet land in the 2 to 3 ton range, and larger two-storey homes often need 3.5 to 5 ton. An oversized AC short cycles and leaves the house clammy, so we measure before we recommend.
Should I replace my AC with a heat pump?
For most Ontario homes with ductwork, yes, it is worth a serious look. A cold-climate heat pump provides the same cooling as a central AC, heats your home for most of the winter, and qualifying models can return up to $7,500 through the Home Renovation Savings Program. We will quote both options side by side.
How long does AC installation take?
A straight central air conditioner replacement usually takes four to six hours. A first-time installation with a new line set, coil and 240V circuit takes most of one day.
What does SEER2 mean on a new air conditioner?
SEER2 is the seasonal energy efficiency ratio measured under the updated test procedure that reflects real-world ductwork. A higher SEER2 number means the unit delivers more cooling per kilowatt-hour, which shows up as a lower summer hydro bill.
Do I need a new coil on my furnace when I replace the AC?
Yes, in almost every case. The evaporator coil must match the capacity and refrigerant of the new outdoor unit, or the system will not reach its rated efficiency and the manufacturer may not honour the warranty. EHI includes a matched coil in every air conditioner replacement.
Can you install an air conditioner in a house with no ducts?
Yes. A ductless mini-split or multi-zone system cools and heats rooms without any ductwork, which suits bungalows with baseboard heat, additions and condos. See our ductless mini-split installation page for options and pricing.