Furnace Services

Boiler Aid

London, United Kingdom

Boiler Aid provides emergency boiler and central heating services, including installation and repair, in London.

BOXT

Leeds, United Kingdom

BOXT is a modern UK-wide boiler and heating installation company founded by Andy Kerr and headquartered in Leeds, England. BOXT offers fixed-price online boiler quotes with installation typically within 24 hours, providing Worcester Bosch, Ideal, Viessmann, and Vaillant boilers through its own employed engineers rather than subcontractors. The company has rapidly grown to become one of the largest independent boiler installers in the UK and also installs air conditioning, heat pumps, and EV chargers through its Boxt Energy division.

Dr. HVAC

Richmond Hill, Canada

Dr. HVAC is a Toronto-area heating and cooling specialist serving York Region, Durham Region, and the Greater Toronto Area with furnace installation, repair, and maintenance services. The company provides high-efficiency gas furnace replacement, emergency no-heat service, furnace tune-ups, and boiler installation for residential customers across Richmond Hill, Markham, Vaughan, Aurora, Newmarket, and surrounding communities. Dr. HVAC is TSSA-certified and offers extended warranties on new furnace installations along with 24/7 emergency heating service during Ontario winters.

Four Seasons Heating & Cooling

Chicago, United States

Four Seasons Heating and Air Conditioning is the largest Lennox dealer in the United States, founded in 1971 and headquartered in Chicago, Illinois. With over 1,200 employees, 800 service trucks, and service to more than 180,000 homes annually, Four Seasons has won the Dave Lennox Award for 17 consecutive years and earned the Lennox Circle of Excellence Award for 12+ years running. The company specializes in furnace installation, repair, and replacement across Chicagoland with 24/7 live customer support and true job-based pricing.

Horizon Services

New Castle, United States

Horizon Services is a leading HVAC and plumbing provider in the Mid-Atlantic region, founded in 1987 as Geiger Services by Dave Geiger and headquartered in New Castle, Delaware. Horizon provides furnace installation, repair, maintenance, and replacement throughout Delaware, Pennsylvania, New Jersey, and Maryland. The company is a factory-authorized Lennox dealer specializing in gas furnaces, high-efficiency heating systems, and the Lennox PureAir purification platform, with 24/7 emergency service and a long-standing reputation in the Wilmington and Philadelphia metro areas.

Lennox Canada

Toronto, Canada

Lennox Canada is the Canadian division of Lennox International, the American HVAC manufacturer founded in 1895. Lennox established operations in Canada decades ago and operates a nationwide network of Lennox Premier Dealers providing furnace installation, repair, and replacement services across Ontario, Quebec, Alberta, British Columbia, and other provinces. Lennox furnaces include the Signature Collection SLP99V with 99% AFUE ratings, the Elite Series, and Merit Series, all backed by variable-capacity modulating burner technology for precise temperature control.

Lennox Ontario

Mississauga, Canada

Lennox is a Canadian heating and furnace service provider serving Toronto, the GTA, and Ontario communities with high-efficiency furnace installation, repair, and maintenance. Operating through Lennox-authorized installers, the network provides residential furnace replacement, gas furnace service, emergency heating repair, and protection plan coverage for homeowners across Ontario. Known for energy-efficient Lennox equipment with AFUE ratings up to 99% and 24/7 emergency service during Ontario's harsh winters.

Shipton's Heating & Cooling

Hamilton, Canada

Shipton's Heating & Cooling is one of the oldest HVAC contractors in Canada, founded in 1922 and headquartered in Hamilton, Ontario. A fourth-generation family-owned business, Shipton's specializes in furnace installation, repair, and replacement for residential and commercial customers across Hamilton, Burlington, Oakville, Grimsby, and the Niagara region. The company is a Carrier Factory Authorized Dealer and provides high-efficiency gas furnaces, boilers, ductless systems, and 24/7 emergency heating service. Shipton's is a recipient of the Carrier President's Award.

Sila Heating, Air Conditioning & Plumbing

Needham, United States

Sila Services is a leading Northeast US HVAC, plumbing, and home services platform operating across Massachusetts, New York, Connecticut, New Jersey, Pennsylvania, and Virginia. Sila and its family of brands (including Sila Heating, Boston Standard, Auchinachie Plumbing, and many others) specialize in furnace installation, repair, and replacement for residential customers throughout the Northeast, with particular expertise in high-efficiency gas furnace systems, oil-to-gas conversions, and hybrid heating solutions. Sila is a Lennox Premier Dealer and Carrier Factory-Authorized Dealer.

Worcester Bosch

Worcester, United Kingdom

Worcester Bosch is the United Kingdom's leading manufacturer of domestic boilers and heating systems, part of the Bosch Thermotechnology division and headquartered in Worcester, England. Founded in 1962 by Cecil Duckworth, Worcester Bosch designs, manufactures, and supports gas boilers, oil boilers, hybrid systems, and heat pumps through a nationwide network of Worcester Accredited Installers. The company has been named Which? Best Buy for 16 consecutive years and is synonymous with British home heating, offering the Greenstar range of high-efficiency condensing boilers.