Boilers are more often seen in residences than commercial settings today, as they are a good choice for keeping a home comfortably heated. However, they are still used in some commercial buildings such as restaurants, swimming pools, car washes, and multi-family units.
Homeowners need to be able to identify the signs their boiler needs service, or even replacement. Except for an old boiler thatโs reaching its end of life, regular maintenance and attention will keep a boiler running smoothly and can help avoid full replacement. As Littleton boiler specialists, Simply Mechanical, AC, Furnace & Boiler Repairโs technicians have seen it all when it comes to boilers. Below are our recommendations for repair versus replacement.
Listen: Your Boiler Might be Telling You Something
- Hearing the water in the pipes. A boiler should be silent, as far as water is concerned.
- Lethargic heat. Itโs not quite doing the job, and your home is not as warm as usual, at the same settings.
- A significant change in energy bills. Look at the year-over-year costs. If itโs costing more to run, and nothing else has changed, this could be a sign itโs operating inefficiently.
The most common repair jobs for a boiler usually include part of the ignition process such as the spark ignition module, or the zone valve, or the drain.
There are also a few signs that point to something more serious, and a potential safety risk. Boilers are more hazardous because their mediumโwaterโcan change its state. And when that happens it becomes 1,000x bigger. Additionally, 80% of efficient boilers donโt rely on induced draft motors and therefore do not have a pressure switch interlock for the gas value.
- A yellow flame. Modern boilers should have a blue flame. Older boilers (1940 or older) should show carbon luminescence or a white flame.
- The presence of carbon scoring or marks that look like black soot. This happens because there is no induced draft motor.
- Dancing flames
Prolonging the Life of a Boiler
When minor issues come up with a boiler, it can be easy to ignore them or simply get used to them. However, some minor issues that are left unchecked can lead to bigger and more costly repairs down the road. For example, if you are hearing noises and air in the pipes but donโt call a boiler specialist, it can lead to pump failure. Or, if you are hearing a waterfall or trickle sound, and see mineral build up on the pipe joints, it likely indicates a small leak that will eventually pop. A basic and helpful thing that homeowners can do is vacuum their baseboard units when they see lint or hair building up on them.

When itโs Time to Contact a Boiler Specialist in Littleton for a Replacement
At a certain point, itโs just more cost-effective to replace a boiler. In general, it can be tough for a boiler specialist to tell just upon looking if a boiler needs replacing. They would have to cut it open to see the wear and tear. A reliable metric for replacement is the age of the boiler.
If a boiler is twenty years, or older, itโs time to consider replacement. In old boilers, water will eventually cut through the belly of the boiler. That dense mineral water acts just as water does in a rock canyon, eventually breaking the rock down. Additionally, around twenty years old, a boilerโs warranty expires. An Original Equipment Manufacturer wonโt guarantee a boiler past twenty years.
Another metric to go by is the amount of a potential repair. If you are up against a $1500 to $2000 repair, itโs best to consider a full replacement.