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.
Kingston · Frontenac County
Kingston Heating and Cooling for Limestone, Brick and Rental Homes
Heat pumps that fit thick walls and tight floor plans
Kingston HVAC work often starts with a thick limestone wall and no room for ducts. We install ductless and slim-duct heat pumps, high-efficiency furnaces and central air in historic downtown homes, student rentals near Queen's and west-end houses from the 1970s to the 1990s. Every quote is written and guaranteed before we start.
- Ductless and slim-duct options
- Service for rental properties
- Rebate paperwork handled
- Evening and weekend emergencies
Our Brand Partners
HVAC services in Kingston, matched to the house you own
Stone houses, brick rentals and suburban homes need different things. Start with the service that fits yours.
Ductless heat pumps in KingstonHeating and cooling for stone and brick homes with no ductwork.Multi-zone systems for older housesSeveral rooms on one outdoor unit, each with its own temperature.Cold-climate heat pumpsMidea EVOX G3 and Kepler units rated to heat down to -30°C.Furnace repair in KingstonNo heat, error codes and short cycling, with a written price before work.AC repair in KingstonWeak cooling, ice on the lines, leaks and dead condensers.HRV and ERV ventilationFresh air for tightly sealed older homes without the drafts.Smart thermostats for rentalsRemote alerts and sensible limits for owners who live elsewhere.
Kingston pricing for ductless, slim-duct and furnace work
Limestone and heritage homes often call for ductless or slim-duct systems. Here is where the pricing starts.
| Service | Typical price in Kingston |
|---|---|
| Ductless mini split, one zone Midea or Kepler wall unit with outdoor unit and line set | 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.
What an HVAC contractor in Kingston checks in a heritage home
Old stone and brick houses hide surprises. These are the things we look at before we suggest any equipment.
- Wall thickness and material, so we know how to core a clean line set opening
- Where an outdoor unit can sit without crowding a heritage facade or a neighbour's window
- Attic, closet and bulkhead space that could hide a slim-duct air handler
- Room-by-room heat loss, since stone walls behave very differently from insulated frame walls
- Electrical panel capacity for a 240V heat pump circuit
- The current heat source, which affects your rebate tier
- Existing radiators or ducts we can keep using as backup
- Condensate drain routes that won't stain stone or freeze in winter
Heat pump installation in Kingston when ducts won't fit
Running new ducts through a limestone house usually means opening plaster, losing closet space and boxing in ceilings. Most owners don't want that, and in many downtown homes it just isn't practical.
There are two cleaner routes. A ductless heat pump mounts a slim head high on an inside wall, so each room or zone gets its own control and the walls stay intact. A slim-duct unit hides in an attic, closet or bulkhead and feeds two or three rooms through short ducts, with only small grilles showing.
A common plan for a Sydenham Ward or Barriefield house mixes the two: slim-duct for the bedrooms upstairs, a ductless head for the main living area, and the existing boiler or furnace kept as backup for deep cold. Kingston winters run colder than the lakeshore GTA, so we size from a proper heat-loss calculation and use cold-climate equipment.
On rebates: if the home is on gas, whether from Utilities Kingston in the core or Enbridge outside it, eligibility depends on the program terms and your utility, and we confirm it before installation. Homes heated by electricity, oil or propane may reach the higher tier of up to $7,500.
A look at our Ontario installs
Recent jobs from our crews in other Ontario communities: ductless heads, slim outdoor units and neat line covers. Your Kingston home gets the same care.
Rental owners near Queen's: emergency HVAC in Kingston and planned upgrades
When a student rental loses heat in February, you need a repair, a price and a record you can keep. We take emergency calls evenings, weekends and holidays, and with your permission we can arrange access with your tenants directly.
Between terms is the best time for bigger upgrades. Swapping baseboards for a ductless heat pump in a rental can lower hydro costs and add cooling tenants will notice.
- Written repair quotes you can approve from anywhere
- Upgrades scheduled for the summer gap between leases
- Warranty registration and records sent to you
- 0% financing for 3, 6 or 9 months, or open loans from 2.99% OAC
Licensed HVAC Contractor · Serving Ontario for 20+ Years
Proudly Serving Kingston, 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 Kingston, with a written, guaranteed quote before any work starts.
- ServingKingston, 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.
Kingston neighbourhoods we travel to
From Portsmouth and Williamsville near the water to Cataraqui North, Westbrook and Inverary, we book visits across the city, including:
- Sydenham Ward
- Portsmouth
- Cataraqui North
- Kingscourt
- Barriefield
- Williamsville
- Reddendale
- Westbrook
- Inverary
- Strathcona Park
What Kingston 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
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.
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!
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.
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.
We also serve communities near Kingston
Other cities in Eastern Ontario we serve
Every city gets the same licensed crews, guaranteed pricing and rebate paperwork. Pick yours for local details.
- BellevilleHVAC services
- Quinte WestHVAC services
- CobourgHVAC services
- Port HopeHVAC services
- PeterboroughHVAC services
- Kawartha LakesHVAC services
- BrockvilleHVAC services
- CornwallHVAC services
- OttawaHVAC services
- KanataHVAC services
- OrléansHVAC services
- NepeanHVAC services
- PembrokeHVAC services
- RenfrewHVAC services
- ArnpriorHVAC services
Frequently asked questions
Can you install a heat pump in a limestone house in Kingston?
Yes. Ductless and slim-duct heat pumps need only a small opening through the wall for the refrigerant lines, so they suit stone homes where new ductwork isn't practical.
What is a slim-duct heat pump?
A slim-duct heat pump is a compact indoor unit that hides in an attic, closet or bulkhead and feeds a few rooms through short ducts. You see small grilles instead of wall-mounted heads.
Do Utilities Kingston gas customers qualify for the heat pump rebate?
It depends. For gas-heated homes, eligibility depends on the program terms and your utility, and we confirm it before installation. Homes heated by electricity, oil or propane may qualify for up to $7,500.
Do you service student rentals near Queen's?
Yes. We repair and upgrade heating and cooling in rental houses near the university and we book entry times with tenants once you, the owner, sign off.
Will a ductless unit look out of place in a heritage home?
It doesn't have to. We place heads high on interior walls, run lines outside behind paintable covers, and choose spots for the outdoor unit that stay out of view from the street where possible.
Is furnace repair in Kingston available on weekends?
Yes. We take emergency furnace calls evenings, weekends and holidays. Call 1-647-694-5845 and we'll tell you when a TSSA-certified technician can get to you.
Page reviewed and updated October 27, 2026. Prices, rebates and program terms are checked at each update.