A properly sized, high-efficiency furnace is one of the most reliable ways to keep your Okanagan home warm through the coldest winters. Macdonald Mechanical installs and replaces natural gas and propane furnaces across Kelowna, West Kelowna, Lake Country, Peachland, Summerland, Penticton, Vernon, and the surrounding Okanagan — with every installation backed by a 10-year warranty and a free in-home assessment to ensure the right fit for your home.
Is It Time to Replace Your Furnace?
Many Okanagan homeowners run their furnaces well past their ideal lifespan — often without realizing it's costing them more in energy and repairs than a replacement would. Here are the key signs it may be time for a new furnace:
Age
Most furnaces have a lifespan of 15–20 years. If yours is approaching or past that range, replacement is worth considering even if it's still running.
Rising Energy Bills
Older furnaces lose efficiency over time. If your heating costs have been creeping up year over year, your furnace may be working harder than it should.
Frequent Repairs
If you're calling for repairs every season, those costs add up quickly. A new high-efficiency unit is often more economical in the long run.
Uneven Heating
Cold spots in certain rooms or inconsistent temperatures throughout the house are a sign your furnace is no longer performing as it should.
Not Sure If You Need a Replacement?
Book a free in-home assessment and we'll evaluate your existing system honestly. If a repair makes more sense than a replacement, we'll tell you — no pressure, no upselling.
Proper Sizing Matters
One of the most common furnace installation mistakes is installing the wrong size unit. An undersized furnace will run constantly and struggle to keep your home warm. An oversized furnace will short-cycle — turning on and off repeatedly — wearing out components faster and leaving your home feeling uncomfortable.
At Macdonald Mechanical, every furnace installation begins with a proper heat loss calculation for your specific home — taking into account square footage, insulation levels, ceiling heights, window size, and the Okanagan's climate. This ensures you get a furnace that's exactly right for your home, not just whatever happens to be in stock.
Natural Gas & Propane Furnaces
We install both natural gas and propane furnaces across the Okanagan. Whether your home is connected to the FortisBC natural gas network or relies on propane — common in rural and semi-rural areas of the Okanagan — we have the expertise and licensing to handle your installation safely and to code.
Brands We Install
We install furnaces from trusted, high-efficiency manufacturers. Every brand we carry is known for reliability and long-term performance in BC's climate.
Carrier
American Standard
Armstrong
Why Choose Macdonald Mechanical?
- 15+ years of residential HVAC experience across BC
- Red Seal certified technician — the highest trade certification in Canada
- TECA certified — up-to-date with the latest BC industry standards
- Licensed B-gas fitter — fully qualified for natural gas and propane installations
- Proper heat loss calculation on every installation — never guessing on size
- Free in-home assessment — honest advice with no pressure
- 10-year warranty on all installations
- Locally owned and operated in Kelowna — you deal with Cory directly
Service Area
We install and replace furnaces throughout the Okanagan. If you are unsure whether we serve your area, give us a call.
Frequently Asked Questions
How do I know if my furnace needs to be replaced?
Common signs include a furnace that is 15–20 years old, rising energy bills, frequent repairs, uneven heating throughout the home, or unusual noises during operation. If your furnace is requiring repeated repairs, a replacement is often more cost-effective in the long run. We can assess your existing system during a free in-home visit.
What size furnace do I need for my home?
Furnace sizing depends on your home's square footage, insulation, ceiling height, window size, and local climate. An undersized furnace will struggle to heat your home, while an oversized one will short-cycle and wear out faster. Macdonald Mechanical performs a proper heat loss calculation for every installation to ensure the right fit.
How long does a furnace installation take?
Most furnace installations are completed in one day. We will confirm the timeline during your free in-home assessment.
Do you install propane furnaces?
Yes. We install both natural gas and propane furnaces across Kelowna and the Okanagan.
What areas do you install furnaces in?
We install furnaces throughout the Okanagan including Kelowna, West Kelowna, Lake Country, Peachland, Summerland, Penticton, Vernon, and surrounding communities.
What warranty do you offer?
All Macdonald Mechanical installations come with a 10-year warranty. We stand behind our work and the equipment we install.