Contractors should ensure homeowners are scheduling regular maintenance visits
The first condensing furnaces were introduced in the mid-1980s, and it’s likely that most of those original systems have been replaced.
Inspect all gas pipe and connections to get leaks; “The inshot burners should be checked for the same deterioration.”
FURNACE MAINTENANCE CHECKLIST
To maintain both condensing and noncondensing furnaces operating at peak efficiency, Lennox Industries Inc.
Inspect the furnace come back air duct connection to ensure the duct is sealed to the furnace.
Perform complete combustion analysis through the furnace inspection to make sure proper combustion and operation. structurally audio; without holes, blockage, or leakage, and be sure the exhaust pipe can be sloped toward the furnace.
Hall stressed that contractors shouldn’t upgrade motors or handles or alter any section of an older condensing furnace so that they can optimize its efficiency or electricians companies near me efficiency. Finally, contractors should verify/adjust gas pressures in this application according to the manufacturer’s instructions and perform a combustion analysis to verify that the furnace is operating properly and gets the proper combustion surroundings volume. Take away the rubber hoses from the chilly end header package, and inspect for just about any blockage – clean as needed.
If the furnace is equipped with a condensate drain and trap, inspect for leaks and cracks.
“As a unit ages or is not maintained, some lack of effectiveness is expected,” said Dwayne Hall, product provider coordinator of residential heating, Lennox Industries Inc. improved inshot burner designs;
“Components must be tested to ensure they are a safe alternate and provide equal or better functionality,” he said. Furthermore, while a replacement component may be a far more efficient alternative, like an electronically commutated electric motor (ECM) versus a long term split capacitor (PSC) motor, existing controls might not be compatible with the new components.
For those home owners who are finally seeking to replace their 20-plus-year-old condensing furnaces, they might be in for a surprise as today’s models offer higher efficiencies along with many more features than their predecessors. “Contractors should also look for visible signs of drinking water leakage at hose connections, inner vent connections, and any steel surface area below these connections. handles to reduce igniter failures;
Indeed, cleanliness, along with proper combustion, will keep a condensing furnace operating at peak efficiency for a long period. The drain and trap must become cleaned, and the trap must be primed with water. If strainers are installed in the hoses, be sure you remove and clean before reinstalling the hoses; “Preferably, a furnace style incorporates components that optimize performance producing a safe, dependable, and affordable product for the customer. modular gas valves;
Even if a condensing furnace is still operable, if it’s over 15 yrs . old, homeowners may choose to consider changing it with a fresh, energy-efficient model, that may save money and offer better comfort. “The majority of the furnace can be cleaned;”
In addition, during regular maintenance, contractors should verify that all hoses are protected and fully-seated and inspect for worn or cracked condensate hoses, said Vinsant.
Evaluate the warmth exchanger integrity by inspecting the heat exchanger per the Air-Conditioning, Heating & Refrigeration Institute (AHRI) warmth exchanger inspection procedure; Fresh air grilles and louvers (on the unit and in the room where in fact the furnace is set up) must be correctly sized, opened up, and unobstructed;
“If you can find low NOx rods, contractors should make sure they are intact, structurally sound, and free of corrosion and corrosion,” he said.
To ensure proper combustion, contractors need to ensure that the vent and combustion pipes are unrestricted, well supported, and leak free, said Remley. clogged surroundings filters; and
Verify procedure of CO detectors and replace batteries, as required.
Ensure sufficient combustion air is open to the furnace.
“There are also many factors that could result in a condensing furnace to stop working, like a plugged condensate management system, plugged pressure switch hoses, an obstruction in the intake or exhaust system, heat exchanger restrictions, and incorrect gas pressure,” he added. “Energy calculators can help consumers compare the savings of different high-effectiveness systems and determine whether to repair or replace an older unit. and more efficient motors, said Remley.
Check the condition of the belt and shaft bearings if applicable; “The end result is that today’s condensing furnaces lower operating costs for homeowners while providing true comfort and ease solutions in both the heating and cooling season. and an unclean blower motor and wheel, to mention a few, said Hall.
On induced draft furnaces, inspect the combustion atmosphere inducer and clean; nevertheless, bringing a high temperature exchanger back again to an operable condition isn’t possible if sooting has occurred.
Check the condition of the furnace cabinet insulation and fix; Consult item literature for correct combustion values; two-stage procedure; “The secondary heating system coil, motor cooling inlet openings, blower wheel vanes, the cooling coil, air filter, and ductwork program all have to be free from dirt and dust to make sure proper airflow across the temperature exchangers of a condensing furnace,” said John Remley, product manager of home furnaces and packaged items, Nortek Global HVAC.”
But also condensing furnaces which are properly maintained will likely lose efficiency as time passes and eventually stop working.
Modern condensing furnaces present other innovative features as well, including stainless steel high temperature exchangers; intake and exhaust pipe recirculation; Sooting may be the end of a high temperature exchanger’s life because it is constructed in such a way that it cannot be completely cleaned and cut back to a satisfactory operating condition.
“Not only possess the efficiencies improved, but the item warranties have improved aswell, which delivers a larger level of consumer and dealer self-confidence,” said Jill Murphy, senior product marketing manager, residential heating, Lennox Industries Inc. New controls, more efficient motors, and better temperature exchanger designs are only a several features that right now come standard on most condensing furnaces. Look for air leaks on source and return ducts, and seal where necessary;”
While most homeowners usually do not relish paying for a fresh furnace, they will likely be pleased to see how very much the technology has changed through the years. Needless to say, there may be a few still left around, especially if their property owners took good care of them, frequently replacing their filter systems and having the units maintained properly. Inspect the rubber hoses connected to the pressure switches for cracks or loose connections, and substitute as necessary.
Check the cleanliness of blower assembly, and clean the housing, blower wheel, and blower electric motor if necessary;
Check the condition and cleanliness of burners and heat exchanger, and clean if necessary;
“By replacing a mature furnace that’s 60-percent efficient with one that is 98-percent efficient, property owners can save approximately 40 percent on energy bills or more to $11,469 over the life of the system,” said Murphy.
“Be sure to look for any type of corrosion or corrosion that could have accumulated on the burners because of a condensate leak that may possess gone undetected at some time during the lifestyle of the furnace,” this individual said.
Factors that can decrease the performance of a furnace include incorrect incoming and manifold gas pressure;
Examine the cleanliness of filter systems and change if necessary;”
Burners may also have to be cleaned seeing that wasps, spiders, and other pests will sometimes build nests in the vestibule of the furnace during the summer months, noted Vinsant. a dirty heat exchanger;
“The furnace was designed, manufactured, and certified per industry standards for safety and proper operation.
“There is only so very much a contractor can do to bring a mature condensing furnace back again to life,” said Remley.”
Vinsant agreed, noting that a replacement part that is not approved by the manufacturer may void any remaining guarantee. Inspect terminations to ensure they are free from obstructions and so are structurally sound; Co. “In the spring, it’s important to get the A/C coil cleaned, because a dirty coil can impact the procedure of the furnace, such as for example heat rise and optimum outlet air.
On condensing furnaces, inspect the furnace intake and exhaust pipes to ensure they are in place;
Condensing furnaces can offer higher efficiencies and better comfort and ease, but they additionally require more care than non-condensing furnaces. offers contractors these maintenance suggestions:
Check furnace wiring for loose connections, voltage in the indoor device, and amperage of the indoor electric motor;”
In addition to higher efficiencies, the most recent condensing furnaces offer fresh technologies, such as enhanced diagnostic systems with LED fault codes, which allow for quicker servicing for the contractor and homeowner, said Vinsant. Which is why contractors should make sure their customers are scheduling maintenance on the furnaces every fall and springtime, said Brian Vinsant, item support specialist, residential heating equipment, Rheem Mfg.
“The bigger tier furnaces even have smart home automation abilities, such as for example Rheem’s EcoNet® control center, which allows the machine to ‘talk’ and troubleshoot using Wi-Fi-connected features like alerts and notifications,” he said.”
TIME TO REPLACE
If homeowners have neglected the maintenance on their condensing furnace for too much time, they may just need to consider replacing it.