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!
Hamilton · Lower City to the Mountain
Hamilton HVAC Services for Century Brick Homes and Newer Builds
Cooling and heat pumps for houses that were never built for ducts
Looking for HVAC in Hamilton that works in a house with plaster walls, hot-water radiators and no ductwork? We install ductless heat pumps, compact duct systems and high-efficiency furnaces from the lower city up to the Mountain. You get a written, guaranteed price before anyone drills a single hole.
- Ductless and small-duct options for homes with no ducts
- Keep your boiler and add AC plus heat pump heating
- TSSA-certified gas techs and licensed refrigeration techs
- Rebate pre-approval paperwork handled for you
Voted Best Company 2019 to 2021 · Authorized Midea, Lennox, Kepler & Rinnai dealer, plus Goodman · 20+ years
Our Brand Partners
Heating and cooling in Hamilton homes that have no ductwork
A lot of Hamilton's older housing stock was heated by a boiler and cast iron radiators, or by an early furnace with a few small, tired ducts. That setup can keep you warm. It does nothing for a muggy July night in Kirkendall or Crown Point, and it leaves no easy path for central air.
You don't have to open walls to fix that. A ductless heat pump puts a slim indoor head on the wall and connects it to one outdoor unit through a hole about 8 cm wide. One outdoor unit can run several heads, so the bedrooms, the main floor and the attic room each get their own control.
Some homes suit a small concealed air handler instead. It sits in the attic or a closet and feeds a few rooms through short duct runs. We look at your floor plan, your electrical panel and your heat loss, then show you which route costs less and works better.
- Keep the boiler for the coldest days, let the heat pump carry the rest
- Line sets run on the outside of the brick and get covered with a painted line hide
- Heat-loss sizing room by room, not a guess from square footage
- 240V circuit and panel work done by ESA-licensed electricians
Problems a Hamilton HVAC contractor sees in older houses
These are the calls that come in from century homes, post-war houses on the Mountain and newer builds alike.
Window units are the only cooling in your radiator house
They're loud, they block the view and they only cool one room. A multi-zone ductless system replaces them with quiet wall heads that cool and heat, and the windows go back to being windows.
The boiler is fine, but the house has nothing for summer
We leave the boiler in place and add a cold-climate heat pump. It cools in summer, heats through spring and fall, and the boiler only takes over when the temperature really drops.
You're worried an install will crack your plaster
Ductless work needs one small core hole per head. We drill from the inside out, seal the opening and route refrigerant lines down the exterior, so the plaster and trim stay as they are.
The old ducts are too small for central air
Ducts sized for a 1950s furnace often choke a modern AC coil. We measure static pressure first, then tell you plainly whether to reuse them, upsize a few runs or go ductless.
Your house on the Mountain takes the wind head on
Open, higher ground loses heat faster. We size from a Manual J heat-loss calculation, pick equipment rated to -30°C, and set the outdoor unit on a stand out of the prevailing wind and above the drifts.
Oil heat costs keep climbing every winter
Switching an oil-heated home to a cold-climate heat pump can qualify for the higher rebate tier, up to $7,500 based on size. We handle the pre-approval before installation.
A builder furnace in a Binbrook or Waterdown home is acting up early
Our TSSA-certified gas technicians check the flame sensor, inducer, pressure switch and condensate drain, then give you a written repair price or an honest replace quote.
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.
What our HVAC company in Hamilton can do for you
Each service page covers the options, the equipment and how the job runs.
Ductless heat pumps in HamiltonWall heads for radiator homes, attic rooms and additions with no ducts.Multi-zone ductless for whole housesOne outdoor unit, up to several rooms, each with its own control.Hybrid heat pump systemsA heat pump paired with a gas furnace or kept alongside your boiler.Heat pump installation in HamiltonMidea EVOX G3 and Kepler units rated to heat down to -30°C.Furnace repair in HamiltonNo heat, short cycling or odd noises, diagnosed with a written price first.AC repair in HamiltonWarm air, frozen coils, leaks and outdoor units that won't start.High-efficiency furnace replacementLennox and Midea furnaces from 96% to 97% AFUE.Emergency HVAC in HamiltonEvening, weekend and holiday calls when heat or cooling stops.
Hamilton HVAC price guide by system
Starting prices for the systems we install most in older and newer Hamilton homes. Your guaranteed quote replaces these numbers once we've seen the house.
| System | Best fit | Installed price |
|---|---|---|
| Single-zone ductless heat pump | One problem room, an attic bedroom or an addition | Quote |
| Multi-zone ductless system | Radiator homes that want cooling in most rooms | Quote |
| Cold-climate ducted heat pump | Homes with usable ductwork | From $5,500 |
| Heat pump plus gas furnace (hybrid) | Mountain homes that want a gas backup | Quote |
| High-efficiency gas furnace | Replacing an old or failing furnace | From $3,300 |
| Central air conditioner | Ducted homes that only need cooling | Quote |
| Rinnai tankless water heater | Freeing up basement space | From $3,300 |
Installed pricing depends on size and installation requirements. Heat pumps may qualify for the Home Renovation Savings Program, up to $7,500 for homes heated by electricity, oil, propane or wood, and a smaller amount for gas-heated homes. Program terms can change, so we confirm eligibility before installation. Financing is available at 0% for 3, 6 or 9 months, or open loans from 2.99% OAC.
Ductless heads, line sets and outdoor units we've installed
A handful of recent jobs from around Ontario. Your Hamilton home gets the same planning and the same tidy finish.
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.
Hamilton neighbourhoods and communities we cover
From Westdale and Locke Street in the lower city to Ancaster, Stoney Creek and Binbrook, we book appointments right across Hamilton, including:
- Westdale
- Hamilton Mountain
- Stoney Creek
- Ancaster
- Dundas
- Waterdown
- Binbrook
- Kirkendall
- Locke Street
- Crown Point
No ducts? Let's price your options anyway.
Send a few details about your house and we'll reply with next steps, usually the same day.
Hamilton service pages
Detailed local pages for the work we do most often in Hamilton.
Heat pump installation in HamiltonCold-climate heat pumps, rebates and sizing for local homesFurnace repair in HamiltonNo heat, short cycling, ignitors and blowers, quoted in writingAC repair in HamiltonWarm air, ice on the coil, leaks and tripped breakersHow to choose an HVAC company in HamiltonLicences to check, questions to ask, red flags and a quote checklist
What Hamilton 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 Hamilton, 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 Hamilton, with a written, guaranteed quote before any work starts.
- ServingHamilton, 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 Hamilton
Other cities in Hamilton and the Niagara Region we serve
Every city gets the same licensed crews, guaranteed pricing and rebate paperwork. Pick yours for local details.
Frequently asked questions
Can you add air conditioning to a Hamilton house with radiators?
Yes. A ductless or multi-zone heat pump cools a radiator home without any ductwork, and it also heats in spring and fall so the boiler runs less.
Do I have to remove my boiler to get a heat pump?
No. Many homeowners keep the boiler as backup for the coldest weeks and let the heat pump handle cooling and milder heating days.
How much does a ductless heat pump cost in Hamilton?
Ductless systems are quoted per home because the price depends on how many rooms you want covered and where the heads go. Ducted cold-climate heat pumps start from $5,500 installed, and every quote is guaranteed in writing.
Will a heat pump keep up on Hamilton Mountain in January?
Yes, when it's sized from a proper heat-loss calculation. Cold-climate models like the Midea EVOX G3 are rated to heat down to -30°C, and a hybrid setup adds a gas furnace as backup if you want one.
Is there emergency HVAC in Hamilton on weekends?
Yes. We take emergency calls evenings, weekends and holidays. Call 1-647-694-5845 and we'll tell you when a technician can get to you.
What should I ask Hamilton HVAC companies before hiring one?
Ask who does the install, whether the quote lists model numbers and permits, and who files the rebate pre-approval. Our TSSA-certified and licensed refrigeration techs do the work, and we handle the rebate paperwork.
Page reviewed and updated October 27, 2026. Prices, rebates and program terms are checked at each update.