Top 5 HVAC Companies
in Thunder Bay
We compared 5 HVAC Companies serving Thunder Bay, Ontario using publicly available business information, including customer reputation, local presence and documented services. Across the businesses featured here, documented specialties include Furnace installation and repair, Air-conditioner installation and repair, and Heat-pump systems.
↘ Thunder Bay’s featured hvac companies have a FiveBest Score below the Ontario benchmark.
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For HVAC in Thunder Bay, Reliance Heating, Air Conditioning & Plumbing provides residential furnace, air-conditioner and heat-pump installation and repair, along with HVAC maintenance. The company also states 24/7/365 telephone support for emergency HVAC assistance.
Furnace installation and repair · Air-conditioner installation and repair · Heat-pump systems
Duct Cleaning Power Vac Services performs HVAC-system cleaning in Thunder Bay, including residential duct cleaning for homes, condos, apartments and trailers, plus commercial and industrial ducts. Published options also include HRV, furnace and central air conditioner cleaning. The company states it uses INGRA vacuum technology rather than roto brushes.
Residential duct cleaning · Commercial and industrial duct cleaning · HRV cleaning
D.Peppard Mechanical Inc. lists Thunder Bay in its service area and documents residential HVAC work spanning furnace and boiler installation and repair, central and ductless mini-split air conditioning, heat pumps, and HRV installation and balancing. The company also states that emergency services are available after hours for unexpected heating or cooling problems.
Furnace installation and repairs · Boiler installation and repairs · Air conditioning installation and repairs
Allam Heating & Cooling ltd lists furnace installation and repair, central AC installation and replacement, HRV air exchangers, garage heaters and gas-line work from its Government Road address in Thunder Bay. Its new-construction work includes HVAC system sizing and layouts, extending its offering beyond equipment replacement.
Furnace installation and repair · Central AC installation and replacement · HRV air exchangers
Robert’s Plumbing & Sheet Metal Co lists heating work in Thunder Bay, including furnace installation and repair, high-efficiency boilers, and water heaters. Documented heating equipment also includes hot-water, oil, gas, wood and electric systems, with ductwork included in its listed heating services.
Furnace installation and repair · High-efficiency boilers · Water heaters
Thunder Bay hvac companies score below the Ontario benchmark
Featured hvac companies in Thunder Bay have a median FiveBest Score™ of 71/100, compared with 86/100 for featured hvac companies across Ontario.
Comparison based on profiles currently featured by FiveBest in this category with an available FiveBest Score™.
How we researched HVAC Companies in Thunder Bay
FiveBest reviews publicly available information for HVAC Companies serving Thunder Bay.
- Google rating and review history
- Documented services
- Years in business when available
- Thunder Bay and surrounding service coverage
- Business website and online presence
- Independent reputation signals when available
Research last updated: September 2026
Typical HVAC Service Price Ranges
Price ranges are based on typical industry averages. Actual costs may vary according to equipment type, system capacity, installation complexity, property characteristics, labour, permits and local market conditions.
- Service call $120–$250
- Furnace repair $250–$1,200
- AC repair $250–$1,500
- Heat pump install $4,000–$9,500+
- Furnace replacement $4,000–$8,500+
Common Services
- Furnace repair and installation in Thunder Bay
- Air conditioner repair and installation in Thunder Bay
- Heat pump installation and repair in Thunder Bay
- Boiler repair and replacement in Thunder Bay
- Ductless mini-split systems in Thunder Bay
- HVAC maintenance and tune-ups in Thunder Bay
How to Choose an HVAC company in Thunder Bay
Compare HVAC contractors in Thunder Bay for furnace and boiler repair, air conditioner installation, heat pump service, ductless mini-split systems, ventilation, thermostats, indoor air quality, seasonal maintenance and emergency heating or cooling. FiveBest helps homeowners and businesses compare selected local HVAC companies in one place.
Compare selected HVAC companies in Thunder Bay for furnace repair, air conditioning, heat pumps, boilers, ductless systems, maintenance and emergency heating or cooling service.
For repairs, ask what testing supports the diagnosis before replacing major components or equipment.
For replacement, ask how heating and cooling capacity is determined rather than automatically matching the old unit.
Confirm equipment, labour, controls, electrical work, drains, line sets, disposal and commissioning.
Confirm the contractor and technicians meet applicable requirements for HVAC, gas, refrigerant or electrical work.
Ask about permits, inspections and documentation needed for any available efficiency rebates or incentives.
Compare parts, compressor or heat-exchanger, labour warranties and maintenance requirements.
What Affects HVAC Costs
- Type of system
- Heating and cooling capacity
- Efficiency rating
- Ductwork condition
- Electrical or gas upgrades
- Refrigerant and line-set requirements
- Controls and thermostat
- Installation complexity
- Permits and commissioning
- Warranty and maintenance plan
Questions to Ask an HVAC Contractor
- How did you determine the required system capacity?
- What exact equipment model and efficiency rating are included?
- Does my ductwork need changes?
- Are electrical, gas or drainage changes included?
- What permits or inspections apply?
- Is commissioning and system testing included?
- What manufacturer and labour warranties apply?
- What maintenance is required to keep warranty coverage?
Frequently Asked Questions
HVAC costs in Thunder Bay depend on the equipment, system capacity, diagnosis, required parts, labour, accessibility and whether the work is an emergency repair or a complete installation. Request a written estimate that identifies equipment and warranty details.
Repair may make sense for a newer system with a limited problem. Replacement may be more practical when equipment is old, inefficient, unreliable, expensive to repair or unable to heat or cool the property properly.
Heat pumps can provide efficient heating and cooling, but the appropriate model and backup-heating strategy depend on the local climate, home insulation, electrical capacity and existing HVAC system.
Many contractors recommend seasonal inspection and maintenance, typically before the main heating or cooling season. Follow the manufacturer’s requirements to protect performance and warranty coverage.
Many companies provide emergency service for loss of heat, system failure, unusual smells, electrical issues or other urgent heating and cooling problems. Confirm hours, response area and after-hours fees.
Compare applicable licences, insurance, equipment brands, system-sizing methods, written estimates, efficiency ratings, labour and manufacturer warranties, maintenance plans, financing and recent local reviews.