HVAC maintenance

CT Mechanical (CTM) is a mechanical contractor based in Addison, Illinois, founded in 2008 by Catherine Tojaga, P.E. The company provides HVAC construction, HVAC maintenance, general construction, subcontracting, and design & engineering services for commercial, institutional, hospital, and aviation clients. It is a certified Women's Business Enterprise (WBE) and has over 60 employees.

construction managementdesign and buildDesign & Engineeringgeneral constructionHVAC constructionsheet metal fabricationsubcontracting

Capabilitiescuebidfaci1dev2026-06-08T16:52:06+00:00 Comprehensive Facilities Maintenance Our capabilities are structured to align with federal performance requirements and operational realities, particularly in remote or lightly staffed environments.HVACHVAC maintenance for RTUs, AHUs, split systems, VAVs, fans, dampers, unit heaters, refrigeration equipment, and associated controls. RTUs • AHUs • Split Systems • Heating • Refrigeration Learn more Electrical & Backup Power Panels, lighting, and critical power systems require constant readiness and maintain maximum uptime. Panels • Lighting • UPS • Generators Learn more Mechanical Systems Pumps, plumbing, fuels, and mechanical rooms. Prevent leaks, service interruptions, and unplanned downtime. Pumps • Plumbing • Fuels • Mechanical Rooms Learn more Liquid Waste & Infrastructure Services Removal, transport, and disposal of liquid waste.

antimicrobial and sanitation applicationscorrective maintenanceelectrical and backup power maintenanceemergency and on-call responseintegrated pest managementliquid waste removal and disposalmechanical systems maintenancepreventive maintenancevacuum truck servicevegetation and rights-of-way management

Custom Climates HVAC is an HVAC company located in Epsom, New Hampshire, serving residents and businesses in southern New Hampshire. Established in 2007, it is an Authorized Mitsubishi Elite Diamond Contractor offering complete HVAC solutions including heating, cooling, maintenance, indoor air quality, and 24/7 emergency repairs.

ductless mini-split installationemergency HVAC serviceHVAC installationHVAC repairindoor air quality services

Custom Engineering is a locally owned and operated HVAC company based in Linwood, Michigan, serving homes and businesses across Bay City, Saginaw, Midland, and surrounding areas since 1984. They provide full-service heating and air conditioning installation, replacement, repair, and maintenance, plus indoor air quality solutions. They are authorized dealers for Trane and Mitsubishi Electric and a Mitsubishi Electric Ductless Pro Elite Contractor.

air duct cleaningair duct sealingduct installationductless mini-split installationHVAC installationHVAC repairthermostat installation

Family-owned HVAC contractor on East Main Street in Church Hill, TN since 2001, with over a hundred years of combined experience. A factory-authorized Carrier dealer with NATE-certified technicians, serving residential and commercial heating, cooling, refrigeration and commercial mechanical work across the Tri-Cities, upper East Tennessee and Southwest Virginia. Bonded, insured and licensed.

commercial HVACductwork fabricationHVAC installationHVAC repairLoad calculationsnew-construction rough-inrefrigeration servicesheet metal fabrication

CW Comfort Solutions is an HVAC company based in Senoia, GA, serving surrounding areas with over 30 years of experience. They provide residential and commercial heating and cooling services including installation, repair, and maintenance of air conditioners, furnaces, and heat pumps, plus duct cleaning and thermostat replacement.

duct cleaningHVAC installationHVAC repairindoor air quality planningthermostat replacement

Campbell Heating & Air Conditioning is a licensed HVAC contractor serving Ridgecrest, CA and surrounding communities. They provide installation, repair, and maintenance of heating and cooling systems for homes and businesses, and are a Carrier dealer offering a complete line of indoor comfort equipment. Emergency service is available.

emergency serviceHVAC installationHVAC repairservice agreements

DAC Heating and Air is a Veteran and Family Owned HVAC Company serving Palmdale, CA, the Antelope Valley, and surrounding areas. They install, repair, and maintain all makes and models of heating and air conditioning systems for residential and commercial customers, and also offer indoor air quality and ventilation services.

HVAC installationHVAC repairindoor air quality servicesventilation system installation

Dahl Air Conditioning, Inc. has been in business since 1977. It is a union company with an average of fifty employees, providing HVAC maintenance and repair services with a comprehensive safety program and OSHA compliant safety manual.

emergency serviceHVAC repair

Dallas Air Conditioning & Heating Inc. is a family-owned, second-generation full service HVAC and general contracting company serving Selma, Alabama and surrounding communities since 1964. It provides repair, maintenance, replacement, remodeling, construction, and new installation services for residential and commercial customers, and has experience with government contracts installing HVAC systems including chillers and boilers.

boiler and chiller installationconstructionduct manufacturinggeneral contractingHVAC installationHVAC repairremodeling

Danpro Cooling and Heating is an owner-operated HVAC contractor based in Sandy, Utah, serving Salt Lake County and the surrounding Salt Lake Valley. Founded in 2019, the company provides furnace installation, air conditioning installation, heat pump services, maintenance, and repairs for residential and commercial customers, with factory-trained technicians and no subcontractors.

air conditioning installationcommercial HVAC solutionsductless mini-split installationemergency servicesfurnace installationgas line installationheat pump servicesHVAC installationHVAC repairnew construction HVAC

Dawson Heating & Air Conditioning provides heating and cooling services in Cincinnati, Dayton, and surrounding areas. Founded by Thaddaus Dawson, Sr. in June of 1980, the company has over 40 years of experience serving residential and commercial customers with a team of trained technicians.

ductworkgas line servicesHVAC installationHVAC repairrefrigeration

Day Mechanical Systems, Inc. is a full service, woman owned mechanical contractor located in Cedar Rapids, IA. We provide a complete range of Engineering, Installation and maintenance services. Our 8,500 square foot facility enables us to fabricate piping systems of all types and sizes. Committed to serving the commercial, power, process manufacturing and health care industry needs of our clients.

engineeringHVAC installationHVAC repairinstallationmaintenancepiping fabricationplumbingprocess pipingproject management

DCS Industries LLC is a local, family-owned business based in Williamsburg, PA, offering full-service HVAC, spray insulation, and certified Tesla Powerwall installation. They provide heating and cooling system installation, maintenance, upgrades, emergency repairs, smart thermostat setup, spray foam insulation for walls, attics, and crawl spaces, and Tesla Powerwall home energy storage integration.

emergency repairsHVAC installationsmart thermostat integrationspray insulationTesla Powerwall installation

DEAR Services is a residential home comfort company in Kent, Washington, founded in 2014 by owner David Hirst. It provides HVAC, plumbing, and electrical services to families throughout the Puget Sound region, offering 24/7 emergency service, maintenance plans, and financing.

24/7 emergency serviceair duct cleaningdrain cleaningdryer vent cleaningelectricalHVAC installationHVAC repairplumbingtrenchless sewer repair

Debalski Heating & Cooling is a local HVAC contractor in Athens, Georgia, serving residential, commercial, and industrial customers. The company provides heating and cooling repair, installation, replacement, and maintenance, including AC repair, furnace repair, heat pump services, mini split installation, PTAC installation and repair, electric wall heater installation, fan and blower motor replacement, ductwork cleaning and repair, blower door testing, and geothermal air to water heat pumps.

blower door testingductwork cleaning and repairgeothermal HVACHVAC installationHVAC repair

Deeply Rooted Mechanical LLC d/b/a Deeply Rooted HVAC provides residential and commercial HVAC and mechanical services in the greater Metro Detroit area, including all surrounding suburbs. The company offers system installation, maintenance, and repairs, including 24/7 emergency repairs, and installs AirQuest systems residentially and all major brands commercially. It is based in Brighton, Michigan.

24/7 emergency repairscommercial HVAC servicecustom system designHVAC installationHVAC repairresidential HVAC service

Degree 71 LLC is a licensed and insured HVAC company in Orlando, Florida, providing air conditioning repair, installation, maintenance, emergency service, mini split installation, and duct cleaning. The company states it is a State of Florida Certified Minority Business Enterprise (MBE) and serves Orlando and surrounding Central Florida areas with 24/7 emergency service and bilingual English/Spanish support.

duct cleaningemergency serviceHVAC installationHVAC repairmini-split installation

DEKA Service is an HVAC/R service company primarily focused on commercial and industrial mechanical systems, based in Fenton, Missouri. It supplies heating, cooling, ventilation, filtration, kitchen and piping products and support for customers' existing equipment, and offers 24-hour emergency service.

24 hour emergency serviceair & water balancingcustom duct designs & modificationsHVAC installationHVAC repairleak testing of piping systems

Dennis' Heating & Air Conditioning is a family-owned and operated HVAC contractor in Redding, CA, serving the North State since 1981. It provides residential and commercial HVAC installation, repairs, maintenance, seasonal service, duct and dryer vent cleaning, and custom sheet metal fabrication.

custom fabricationdryer vent cleaningduct cleaningHVAC installationHVAC repairsheet metal fabricationwelding

Densel Company is a commercial HVAC contractor serving the Washington, DC metropolitan area since 1970, founded by Harry Densel and Bobby Gilman. It provides HVAC installation, maintenance, and repair for commercial properties, universities, hospitals, religious institutions, and high-rise buildings, and is a union contractor of Steamfitters Local 602 and Sheetmetal Local 100.

24/7 emergency servicecontrol system servicesductwork fabricationenergy-efficient HVAC designHVAC installationHVAC repairmechanical equipment assessmentssheet metal fabrication

Desert Diamond Air is a locally owned HVAC and plumbing company serving Phoenix, Arizona and the surrounding West Valley communities. The company installs, replaces, repairs, and maintains air conditioning, heating, and plumbing systems, and offers home performance services such as energy audits, attic insulation, and Aeroseal duct sealing. Its technicians are certified by the Building Performance Institute (BPI).

AeroSeal duct sealingattic insulationdrain cleaningduct cleaningduct foggingenergy auditsHVAC installationHVAC repairplumbing servicessewer line inspectionswater treatment installation

Dezier Air is a licensed New York City HVAC contractor providing residential and commercial HVAC repair, maintenance, installation, and design/consulting across all five boroughs. The company serves apartments, townhomes, high-rise and multi-unit buildings, offices, retail, restaurants, and mixed-use properties, with documented service and clean execution.

boiler and furnace repairemergency HVAC serviceequipment selectionheat pump serviceHVAC design and consultingHVAC installationHVAC repairLoad calculationsmini-split and VRF servicesystem diagnostics

Locally owned HVAC company serving San Antonio, La Vernia, New Braunfels, and surrounding areas. Licensed and insured for AC repair, heating, installation, commercial refrigeration, and metal fabrication. Available 24/7 for emergency service.

band saw cuttingductwork design and installationHVAC installationHVAC repairon-site fabricationplasma cuttingrefrigeration servicesheet metal fabricationVRF installation and commissioning