- Air Conditioning Information and Diagnosis
- Displays diagnostic charts on air filter restoring, refrigerant charging and thermostat applications. Includes product details and images.
- Air Conditioning Pal
- Offers air conditioning advice and troubleshooting information. Also features a software for monitoring weather.
- Air Conditioning Pal Software
- Provides information on repairs and guidelines regarding maintenance. Includes product ordering, prices and related links.
- Appliance 411: Air Conditioner
- Provides information and tips on air conditioning maintenance and repair.
- Big Blu Manual
- Presents handbook on basic and advanced refrigerant gas leak detection. With list of products.
- Buried Tanks – Home Heating Oil
- Archive of articles covering issues on above ground oil storage, tank leaks and problems.
- Carbon Monoxide Alert
- Details on the health effects and fatal toxicity of this gas, which is the leading cause of accidental poisoning deaths in the USA.
- Carbon Monoxide Poisoning
- Displays basic information on gas, with articles on its toxicity and poisoning symptoms.
- EPA: Indoor Air Quality
- Contains articles with tips and information on air duct cleaning and other related issues.
- Hannabery HVAC
- Introduces the services and product offers of a heating, ventilation, and air conditioning specialist company.
- HearthNet
- Features a BTU calculator that allows for an instant online estimation of heating needs for rooms.
- Heat Pipe Technology
- Manufacturer of heat pipes for dehumidification and heat recovery.
- Heat Pipes
- Displays information and diagrams, which explains the structure of a traditional heat pipe and its applications.
- Heating System Maintenance
- Details proper care of heating systems as well as tips on its installation.
- HeatingHelp.com
- Resources and information regarding home heating and duct work.
- HomeTips: Air Conditioning and Cooling
- Advice on central vs. room air conditioning units, ceiling fans, and natural cooling.
- Honeywell
- Manufactures aerosol products and offers various services. Provides company history, events list, and list of career opportunities.
- How To Repair Air Conditioners
- Offers resources and sells a downloadable e-book with step by step instructions for maintaining and repairing home air conditioning systems.
- HVAC Advice
- Personal site of a heating and air conditioning expert provides hints related to HVAC purchasing.
- HVAC City
- Information about and lists of heating, ventilation, and air conditioning contractors, manufacturers, and distributors.
- HVAC City
- Describes the terms and acronyms that are related to heat pump or air conditioners for residential consumers.
- HVAC Mechanic
- Hosts climate control forums, presents news, and offers a comprehensive knowledge base for HVAC information.
- HVAC Talk
- Facilitates forums, posts job opportunities, and offers information about HVAC contractors.
- Information on Hearth Fuels and Products
- Compares and contrasts a variety of hearth items including stoves and fuel. With BTU and fuel cost calculators.
- National Refrigerants
- Site of one of United States' largest independent distributors of refrigerants. Information on products and services presented.
- Old House Web: HVAC and Insulation
- Presents instructions and tips on installing, repairing, and replacing air conditioners.
- Ontario Propane Association
- Provides a manual on safer LPG installation and inspection instructions.
- Radiant Design Institute
- Information about radiant floor heat design and installation.
- RCD Corporation
- Online store for adhesives and sealants used in the HVAC Industry. With a frequently asked questions section.
- Repair Net
- Check for repair costs information with this price guide.
- Resprod
- Aims to provide intelligent products and solutions for indoor environments.
- The Sheet Metal Shop
- Avenue for sheet metal workers information exchanges. With discussion forums.
- Sound Home Resource Center
- Features an index of articles about home construction, remodeling and maintenance.
- Space Conditioning Systems
- Contains information on operating, troubleshooting, and maintaining home heating systems.
- US CPSC Recall and Product Safety Alerts
- Displays a searchable database on product safety news dedicated to protect the public from unreasonable risks from consumer products.
- Warm Air
- Information about building heating, cooling, heat loss, and air quality. With energy calculators.
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