Commercial and Residential HVAC Services

We install, maintain and repair heating, cooling, ventilation and water heating systems for homes and businesses. That includes furnaces, air conditioners, heat pumps, water heaters and indoor air quality equipment, plus ductwork, gas lines, service plans, commercial HVAC and 24/7 emergency repair.

Yes. Our technicians service and repair all brands and makes of heating and cooling equipment, whether or not we installed it, with access to repair parts from all manufacturers. When it's time for new equipment, we'll walk you through the brands we carry and help you choose the right system for your home or business.

Every technician who comes to your door is a licensed, factory-trained Lancaster employee, never a subcontractor. That means the person diagnosing your system works for us, follows our standards and is accountable to us, and you know exactly who to call if you have a question after the visit.

For repairs, we use upfront, flat-rate pricing: our technician explains what failed and your options, and gives you the price before any work starts. For new equipment, we visit your home, assess your needs and give you a free, no-obligation written quote. You decide with the full picture in front of you.

No. Quotes for new furnaces, air conditioners, heat pumps and other installations are free and no-obligation. We look at your home, your current system and your comfort goals, size the equipment properly, and give you an itemized quote with options. Request a quote to book a visit.

Our main office is on the Hamilton Mountain, and Hamilton and Niagara are our focus. We also serve communities in Halton, Haldimand County, Brant, Waterloo Region, Wellington and Mississauga, including Burlington, Oakville, Caledonia, Brantford, Cambridge and Guelph. See the full list on our service areas page, or contact us to check your address.

Our office is open Monday to Friday, 8:00 a.m. to 4:30 p.m. Outside those hours, our emergency service runs 24 hours a day, so you can reach a technician at night, on weekends and on holidays when your heat or cooling fails. See emergency HVAC repair or contact us to book regular service.

Yes. Lancaster Heating and Cooling is a TSSA registered contractor, and our technicians are licensed for the work they do, including gas work, which in Ontario must be done by certified gas technicians. We've served Hamilton since 1955 and are part of Lancaster Group, which also runs its own sheet metal fabrication shop.

Yes, for homes. We offer financing through Financeit, so you can spread the cost of a new furnace, air conditioner, heat pump or water heater over monthly payments instead of paying all at once. See financing for details, or ask about it when we prepare your quote.

Yes. We're a participating contractor in Ontario's Home Renovation Savings Program, so we can submit heat pump rebate applications for our customers. Rebate programs change often and have their own eligibility rules, so check our rebates guide and we'll confirm what applies to your home when we quote.

It depends on the equipment's age, condition, repair history and efficiency. A single repair on a sound system usually makes sense; frequent breakdowns on an older system often don't. Our technician will give you an honest assessment and the upfront cost of the repair, so you can compare it with a free quote for new equipment.