Top 5 HVAC Companies
in Oakville
We compared 5 HVAC Companies serving Oakville, 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, Furnace repair, and Air conditioner repair.
★ Oakville’s featured hvac companies have the highest score among the nearby FiveBest markets compared.
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For HVAC in Oakville, Reliance documents installation, repair and maintenance for heating and cooling systems. Its Oakville offering includes furnaces, central and ductless air conditioning, and heat pumps, with 24/7 phone support for urgent needs.
Furnace repair and installation · Air conditioner repair and installation · Heat pump systems
AtlasCare Heating & Cooling provides Oakville HVAC services for home heating and cooling systems, including furnace, boiler, air-conditioner and heat-pump installation and repair. The company documents 24/7 emergency help for urgent equipment failures, making it relevant for planned system upgrades and loss-of-heating or cooling calls.
Furnace installation and repair · Air conditioner installation and repair · Heat pump installation and repair
From its Cornwall Road facility, A1 Air Conditioning & Heating provides Oakville HVAC repair, installation and maintenance for furnaces and air conditioners. The company documents 24/7/365 emergency service for heating and air-conditioning problems, with work performed by its own triple-certified technicians rather than subcontractors.
Furnace repair · Air conditioner repair · Furnace and air conditioner installation
Abbey Air Home Services by Enercare handles air conditioner and furnace repair, replacement and maintenance in Oakville. Service visits include a safety and performance inspection, a fixed-price quote and a HomeCare report explaining the equipment’s condition. Heating and cooling maintenance plans are also available.
Air conditioner repair · AC replacement and installation · Furnace repair
Furnace King Home Services provides residential HVAC work in Oakville, including furnace and air-conditioner installation, repair and maintenance. Its Oakville service information also documents heat-pump service, duct cleaning and tankless water-heater maintenance, with 24/7 emergency heating and cooling repair for urgent system breakdowns.
Furnace installation and repair · Air conditioning installation, repair and maintenance · Heat pump service
Oakville hvac companies lead nearby FiveBest markets
Featured hvac companies in Oakville have a median FiveBest Score™ of 90/100, compared with 86/100 for featured hvac companies across Ontario.
Among nearby FiveBest markets, those in Burlington (85/100) and Milton (77/100) score below Oakville, while Mississauga (90/100) is close to Oakville.
Comparison based on profiles currently featured by FiveBest in this category with an available FiveBest Score™.
How we researched HVAC Companies in Oakville
FiveBest reviews publicly available information for HVAC Companies serving Oakville.
- Google rating and review history
- Documented services
- Years in business when available
- Oakville 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 Oakville
- Air conditioner repair and installation in Oakville
- Heat pump installation and repair in Oakville
- Boiler repair and replacement in Oakville
- Ductless mini-split systems in Oakville
- HVAC maintenance and tune-ups in Oakville
How to Choose an HVAC company in Oakville
Compare HVAC contractors in Oakville 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 Oakville 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 Oakville 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.