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Energy-Efficient Heating and Cooling Solutions for Your Home
When your heating or cooling system stops keeping up, replacement usually makes more sense than another repair bill. Sub Zero Heat installs heat pumps, AC systems, and high-efficiency HVAC equipment for homes across Duncan, Mill Bay, Chemainus, Cobble Hill, Cowichan Bay, and the surrounding valley.
We size each system to your home, handle the full installation, and walk you through every BC rebate that applies. Whether you are replacing equipment that has run its course or upgrading to something more efficient, the process is straightforward when you work with a crew that does it every day in the same communities.
Before recommending anything, we look at your home: square footage, insulation, existing ductwork, how the space is used, and how your current system has been performing. Sizing matters more than most homeowners realize. An oversized unit cycles too often and wears out faster. An undersized one runs constantly and struggles when temperatures drop. Getting this right from the start saves money over the life of the system.
We walk you through the options that suit your home and budget, including available rebates through the CleanBC Better Homes program and Greener Homes. Most Cowichan Valley homeowners are surprised by how much the upfront cost drops once rebates are factored in. We handle the paperwork.
Our licensed technicians remove old equipment if needed, complete the full install, and verify airflow, electrical connections, and refrigerant charge before leaving. The site is left clean and clear.
We test the system, configure controls, and make sure you understand what maintenance is required and what your warranty covers. You should feel confident using the system from day one, not left guessing.
We install high-efficiency systems for BC homes, whether you are replacing outdated equipment or upgrading for better year-round comfort and lower energy bills.
Cowichan Valley homes vary more than most people expect. Older heritage builds in Duncan have different ductwork, insulation, and electrical setups than newer construction in Shawnigan Lake or Mill Bay. Homes near Cowichan Bay deal with coastal air and humidity that affects equipment differently than properties further inland toward Lake Cowichan.
An installation that ignores those differences will work for a while, then create problems. We set each system up to handle the conditions specific to where the home sits, not just follow a standard spec sheet.
Our technicians are based in the valley and have worked across most of the communities we serve. That local familiarity matters when it comes to sizing, airflow, and making sure a system performs through BC’s damp winters and warm summers.
Every home is different. Whether you are replacing an old furnace with a heat pump or planning a full system upgrade for a renovation, we make the process straightforward. From selecting the right equipment to removing outdated systems, our focus is on installations that last and systems that perform.
We help homeowners throughout the Cowichan Valley with first time installs and complete system replacements.
Reach out to us here and we will get back to you as soon as we can.
We install heat pumps and AC systems across the Cowichan Valley. Our licensed technicians regularly work in:
Not on the list? Contact us. Our service area covers the full Cowichan Valley and surrounding communities.
Everything you need to know about upgrading or installing a new HVAC system in your home.
Age and reliability are the two main indicators. A heat pump or AC unit past 15 years is likely losing efficiency even when it appears to be working. If you are spending on repairs regularly, if the system struggles to maintain temperature during cold snaps or hot spells, or if your energy bills have crept up without explanation, a replacement assessment makes sense. We offer free quotes across the Cowichan Valley with no obligation.
Repairs can extend the life of a system, but when costs add up or the unit is outdated, full HVAC replacement Cowichan Valley wide is often the smarter investment. We walk you through both options so you can decide with confidence.
Most installations are completed in one to two days, depending on the system type and your home. We provide a clear timeline before work begins.
Costs vary by system type, home size, and the scope of the job. We provide free quotes so you know pricing upfront.
In most cases, yes. Heat pumps can replace older gas or oil heating systems and also provide cooling, which many older systems in the valley never had. We assess your home, size the replacement correctly, and handle the full installation including removal of the existing equipment.
Yes. Many heat pump installations qualify for rebates through the CleanBC Better Homes program and the federal Greener Homes Grant. The available amounts depend on the system type and efficiency rating. We walk you through what applies to your project and handle the rebate paperwork as part of the installation.
Yes. We remove and properly dispose of your old system as part of the installation. You do not need to arrange separate disposal.
Yes. We work across Duncan, Ladysmith, Chemainus, Mill Bay, Cobble Hill, Shawnigan Lake, Cowichan Bay, Lake Cowichan, Honeymoon Bay, Koksilah, and surrounding communities. If you are not sure whether your area is covered, call us and we will confirm.
