Choosing a Contractor

Part 4 of Energy-Efficient Air Conditioning. Choosing a contractor may be the most important and difficult task in buying a new central air conditioning system. Ask prospective contractors for recent references. If you are replacing your central air conditioner, tell your contractor what you liked and did not like about the old system. If the […]


What should you know about warranties?

Part 16 of Get Your Power from the Sun. Warranties are key to ensuring that your photovoltaic system will be repaired if something should malfunction during the warranty period. photovoltaic systems eligible for some solar rebate programs must carry a full (not “limited”) two-year warranty, in addition to any manufacturers’ warranties on specific components. This […]


How do I choose among bids for my solar water heater? Is the least expensive the best deal?

Part 10 of Heat Your Water With The Sun. It is usually a good idea to get more than one bid for installation of your solar system. Make sure that all the bids you receive are based on the same information and requirements. For example, comparing a bid for a system mounted on your roof […]