See also: Thermostats
Carbon Monoxide Protocol
home.att.net
Guidelines to determine whether potential exists for this deadly gas to enter a house.
Sound Home Resource Center
soundhome.com
In-depth articles on topics related to improvement, care, and maintenance.
Heating System Maintenance
muextension.missouri.edu
Tips on preparing a furnace for winter operation.
Furnace Blower Repair
misterfixit.com
Short example on replacing bearings and fan belt.
Appliance411.com
appliance411.com
List of do's and don'ts for maintenance and repair.
HVAC Stories at Old House Web
oldhouseweb.com
Advice geared toward historic or older homes.
Duct Cleaning
epa.gov
EPA tips on how to determine if ductwork needs cleaning. Criteria for choosing a contractor.
Air Conditioning for Home Owners
accheckup.com
Interactive manual includes basic troubleshooting and maintenance tips for do-it-yourselfers. Feedback form provided for technical questions.
Warmair.com
warmair.com
Information on heating system operation, components, troubleshooting and maintenance.
Learn Ductwork
thesheetmetalshop.com
Illustrated tutorial on fabricating sheet metal ductwork.
Hannabery HVAC
hannabery.com
Everything from troubleshooting to maintenance and repair.
Space Conditioning Systems
msue.msu.edu
Instructions on maintenance procedures for heating systems. Includes drawings and diagrams.
Honeywell
honeywell.com
Devices include thermostats, humidistats, air cleaners and humidifiers. Everything from manuals to troubleshooting guides to programming instructions to product support.
Big Blu Manual
refrigtech.com
Tutorial illustrating step by step procedures for finding refrigerant leaks.
HeatingHelp.com
heatinghelp.com
Find answers to steam heating problems by posting questions for experts or reading excerpts from books about heating.
Carbon Monoxide Alert
homesafe.com
Comprehensive site includes safe/unsafe practices, effects, detector placement, and discussion.
Allexperts Repair Q and A
allexperts.com
Volunteer mechanics answer questions via e-mail. Volunteers can be evaluated based on credentials and user ratings.
Buried Tanks - Home Heating Oil
inspect-ny.com
Legal, environmental and technical information.
Recalls
cpsc.gov
Searchable database provided by Consumer Product Safety Commission.
Hearth.com
hearth.com
Information on gas, wood, pellet, and coal appliances. Cost comparison of the different fuels.
HVAC-Talk
hvac-talk.com
Software bulletin board for HVAC contractors, home-owners, do-it-yourself enthusiasts to use for heating and air conditioning concerns.
BTU Calculator
hearth.com
Estimate the heating needs of a room, combination of rooms, or an entire home.
RepairNet
repairnet.com
Flat rate price guide for checking repair costs.
Brazing, Soldering and Welding
jwharris.com
Tutorial illustrating step by step procedures.
Homestore.com: Heating How-To Articles
homestore.com
Wide assortment of tips including programmable thermostats, cleaning air ducts, reducing moisture problems, and basic maintenance.
AC-Pal
ac-pal.com
Software allows input of data from instrument readings and gives solution to the problem. Definition and help section provides additional information about concepts and functions. Demonstration version available.
National Refrigerants
refrigerants.com
Technical support and regulatory updates; articles, faq, and news.
Heat Pipes
heatpipe.com
Fact sheet illustrates the theory and operation. Add-on device for air conditioner to improve de-humidification.
HVAC Glossary
hvac-city.com
Consumer guide to the array of efficiency ratings, abbreviations and acronyms used to describe or explain the products.
HVAC Mechanic
hvacmechanic.com
Information and support on heating, ventilation and air conditioning systems or controls for home owners and professionals. Knowledge base, recalls, forum, glossary, and events.
Howstuffworks.com
howstuffworks.com
Article that describes air conditioning operation from window units up to large industrial applications.
Home Ideas
homeideas.com
Order form to request free literature on new units and related products.
The Boiler Room
boilerroom.com
Forum to post residential steam related questions.
Air Duct Calculator
connel.com
Input a desired flow rate in CFM, a limiting velocity in FPM, air temperature in degrees F, the length of the duct, and the duct material. The program calculates the duct cross sectional area, the circular duct diameter, and rectangular duct equivalents.
Air Conditioning Information and Diagnosis
longviewweb.com
Diagnostics chart for troubleshooting. Tips on air filters, refrigerant charging, thermostats, and operation.
John Mills Work Page
johnmills.net
Advice from a service manager on buying a new unit, illustrated essay on chimney liners, and a history of brand names.
Carbon Monoxide Poisoning
epa.gov
EPA site provides advice on CO detectors, poisoning symptoms and prevention.
Ontario Propane Association
propane.ca
Liquid propane gas serviceman's handbook. Installation and inspection instructions.
RCD Mastics
rcdmastics.com
How to locate, repair, and seal ductwork.