It’s wonderful to live in a society in which we can flip a switch or turn a knob and get warm in winter. In fact it’s so easy, we can sometimes forget about our heating system and any maintenance needs it might have. Perhaps we’d rather not think about something that big for fear that servicing it will cost a fortune. As with most things a little knowledge and facing the monster :>} is best. What do you need to do now and what should you be aware of?

Change the filter. This is easy to do yourself. Writing this post reminded me that I hadn’t changed mine in over a year, so I did it today and found a high performance filter that lasts 12 months, and does better at filtering out allergens with “electrostatically charged fibers” and a “1550 microparticle rating.”  Usually you should change your filter every 3 months.

Have professional HVAC service checks. The HVAC industry recommends twice per year checkups. Most people find that once per year is more than adequate.

What is involved in a maintenance service?

• Gas piping is checked for leaks.
• Burner combustion is checked for efficiency.
• Heat exchanger is checked for efficiency, leaks, safety.
• Moving parts are lubricated.
• Functioning of controls is checked.
• Electrical connections are checked and tightened.
• Fans/blowers are cleaned.

You might be able to go longer between service calls. This makes the most sense if your unit is fairly new. At stake can be efficiency of your system, and in some cases safety. Older systems can develop leaks, which can include carbon monoxide. A CO2 detector alarm is a good measure. For most it isn’t a matter of the exact cycle of maintenance, but rather doing it all. You really don’t want to ignore this important household system.

Should you get uprades to your system? Depending on your system and space requirements you may be able to add a few options. There are filter systems that can take allergens, bacteria, and even viruses out of your conditioned air. You can add AC to your current system. You may be able to save energy while making your home more comfortable with a new programmable thermostat. You might change the blower motor or controlling circuitry. There may be exposed ductwork that could use more insulation. And you could insulate your return air – these last 2 points obviously to increase efficency and energy usage.

When should I replace my system? Systems over 10 years old are candidates, however systems are usually designed to last 25 to 30 years. Efficiency, designated in AFUE % can get as low as 50% in an older or ill maintained system. Regular maintenance and service can increase those numbers. Whether a new 90% efficient system (there are some that claim 95%) will pay for itself in 8 to ten years really depends on how much heat you use each winter. Here’s an example: if you’ve currently got a 70% efficient system and it costs $1,200 a year compared to a 90% system which could reduce your bill by $300 a year,the numbers aren’t going to pencil and return the investment in any reasonable time period.  If you spend quite a bit more on your HVAC system per year and you get a highly efficient system along with a sophisticated thermostat, the numbers might work.  It really will depend on your situation – so sharpen those pencils and do the math before plunging into a purchase of this size!

And after any and all research you do, it’s always helpful to seek the services of a recommended HVAC professional.