Key Points Furnaces and HVAC systems should be inspected and serviced at least once a year.It may be okay to skip servicing if the unit is new or was serviced recently and has not been used ...

The first modern oil furnace with a high-voltage system for self lighting was unveiled in 1918. By the mid-1920s, demand for ...

Colorado’s cooling season is so short that A/C systems aren’t especially overworked and usually only require service every other year. A furnace, however, needs an annual check, clean and service.

I'm renting an apartment heated by natural gas, via steam radiators. The landlords are idiots (see below), so it's up to me to make sure the thing is maintained, and then I just submit the bill to ...