Save a $75 maintenance call: If you have an older furnace that's not working, check to make sure the standing pilot light is on. New furnaces have electric pilot lights that don't require much

Save a $75 maintenance call: If you have an older furnace that's not working, check to make sure the standing pilot light is on. New furnaces have electric pilot lights that don't require much attention.
MAINTENANCE CHECKLIST
At the very least, your heating contractor should:
Check thermostat settings to ensure that the heating system turns on and off at the right temperatures.
Tighten all electrical connections and measure voltage and current on motors.
Lubricate all moving parts.
Inspect the condensation drain in your furnace.
Check system controls to ensure safe operation.
Show you how to correctly change your air filter.
Check all gas or oil connections, gas pressure, burner combustion and heat exchanger.
HIRING A HEATING CONTRACTOR
Before you have your furnace inspected or a new system installed:
Know the model of your current system and its maintenance history, and make note of any uncomfortable rooms. This will help potential contractors better understand your heating needs.
Consider professionals certified by North American Technician Excellence (NATE), the leading industry-supported testing and certification program, (877) 420-6283, (703) 276-7247 or www.natex.org.
Ask for a copy of proof of insurance and liability.
Call a contractor's references.
Get at least three written, itemized estimates for major work. When studying bids, be sure to compare cost, energy efficiency and warranties. An inexpensive furnace may not be the best deal because if it's not efficient, your energy costs will be higher.
Sign a written proposal with a contractor before work starts. It will protect you by specifying project costs, model numbers, job schedule and warranty information.