100 Most Frequently Asked Questions

Leave the area, avoid switches, flames, phones, and appliances near the odor, and call 911, the fuel supplier, or a licensed service provider from a safe location. Do not try to relight equipment until it is checked.

Headaches, dizziness, nausea, sleepiness, a smoky smell, soot near equipment, backdrafting, or alarms going off can all be warning signs. Evacuate, call 911, and have fuel-burning appliances and chimneys inspected before reuse.

Common causes include dirty filters, blocked vents, frozen fuel lines, low water pressure, ignition issues, bad sensors, or restricted combustion air. Repeated shutdowns should be inspected promptly because cold weather can lead to frozen pipes.

No. One reset after checking basic items may be reasonable if the manufacturer allows it, but repeated resets can create a puff-back, burner damage, or unsafe combustion. Call for service if the system does not start normally.

Shut off the water if a pipe is split or leaking, open the faucet, gently warm the area with safe heat, and call a plumber if you cannot locate the freeze. Never use an open flame or torch to thaw pipes.

Shut off the nearest fixture valve or the main water shutoff, move valuables, avoid electrical hazards, and call a plumber. If water is near an electrical panel, outlet, or appliance, treat it as an emergency.

A main drain, sewer, septic, or ejector pump problem may be preventing wastewater from leaving the home. Stop running water, avoid using fixtures, and schedule urgent drain or plumbing service.

Shut off the water supply to the heater, turn off power or fuel according to the unit type, and call a plumber. Leaks from the tank body usually mean replacement is needed.

No. Generators must be kept outdoors and away from openings because carbon monoxide can build up quickly in garages, bulkheads, porches, and other semi-enclosed spaces.

Call 911 for suspected carbon monoxide exposure, fire, explosion risk, heavy fuel odor, electrical shock risk, active flooding with danger to occupants, or any situation where people are unsafe. Contractors can help after the immediate hazard is controlled.

Most oil-fired systems should be professionally cleaned and tuned annually. Oil equipment can collect soot and sediment, and regular service helps prevent no-heat calls during the coldest months.

Annual maintenance is a good standard for most gas-fired equipment. A technician checks ignition, burners, venting, safeties, combustion, condensate drainage, and airflow so the system runs safely and efficiently.

A boiler heats water for baseboard, radiators, radiant floors, or indirect water heaters. A furnace heats air and distributes it through ductwork. Many Central Maine homes use boilers with hydronic baseboard heat.

Air trapped in heating zones, poor circulator performance, blocked baseboard fins, closed dampers, under-sized radiation, thermostat placement, or insulation gaps can all cause uneven heat.

Gurgling usually means air is trapped in the hydronic system. The system may need purging, pressure adjustment, or service to the expansion tank, pressure reducing valve, or circulator.

Low pressure may come from a leak, failed fill valve, or air removal issue. High pressure may involve an expansion tank, fill valve, or relief valve problem. Because pressure affects safety, have it checked.

An expansion tank absorbs pressure changes as heating water expands. If it fails, pressure can rise, relief valves may drip, and the boiler may short cycle or shut down.

A dripping relief valve can indicate high pressure, a failed expansion tank, a faulty fill valve, overheating, or a defective valve. It should not be ignored because it is a safety device.

A puff-back can occur when unburned oil ignites in the combustion chamber, sending soot through the system and sometimes the home. Causes can include ignition trouble, delayed ignition, dirty burners, or draft problems.

Schedule annual maintenance before winter, keep fuel levels adequate, change filters, keep vents and intakes clear of snow, know the emergency switch location, and verify thermostats and batteries are working.

Dusty homes, pets, renovations, leaky return ducts, high fan use, and low-quality filters can load a filter quickly. A clogged filter restricts airflow and can cause overheating or poor comfort.

Closing too many registers or doors can reduce airflow and upset system balance. It may also cause overheating, duct pressure issues, or comfort problems. A zoning or balancing solution is better.

Short cycling means equipment starts and stops too frequently. It can be caused by over-sizing, airflow problems, dirty filters, thermostat issues, blocked vents, low refrigerant, or boiler control problems.

Set it where the home is safe and comfortable. Many homes use the upper 60s to low 70s, but heat pumps, radiant systems, older homes, and occupants with health needs may require different settings.

Yes, chimneys and vents should be inspected regularly, especially with oil, propane, wood, pellet, or older equipment. Blocked, damaged, or poorly drafting chimneys can create carbon monoxide and performance problems.

Yes, properly selected cold-climate heat pumps can provide efficient heat through much of Maine's heating season. Sizing, placement, installation quality, and backup strategy are important for good performance.

Usually no. Heat pumps often work best when they hold a steady temperature. Large setbacks can make them work harder to recover and may reduce comfort.

In some homes, yes, but it depends on heat loss, layout, equipment sizing, electrical capacity, and homeowner comfort goals. Many homes use heat pumps as primary heat with a boiler or furnace as backup.

Install it where airflow can reach the space being conditioned, away from obstructions and conflicting thermostats. Dead-end rooms, closed doors, stairwells, and long hallways may need additional units or distribution planning.

Heat pump air may feel cooler than furnace air even while still heating the room. If the room temperature is falling, the unit is icing heavily, or error lights appear, schedule service.

Light frost and periodic defrost cycles are normal. Heavy ice, fan obstruction, drainage problems, or a unit encased in snow or ice should be checked.

Many ductless filters should be checked monthly during heavy use and cleaned as needed. Dirty filters reduce airflow, comfort, efficiency, and equipment life.

Yes. Air-source heat pumps provide both heating and cooling, and they also help dehumidify in summer. That is useful in Central Maine homes that may not have ducted central air.

The correct size depends on a heat-loss calculation, layout, insulation, window quality, ceiling height, and how much of the home the unit must cover. Guessing can lead to poor comfort or short cycling.

Efficiency Maine has offered rebates for eligible high-efficiency heat pumps, with amounts and eligibility tied to income, equipment, and project type. Always confirm current program rules before quoting a rebate.

Air movement limits, closed doors, room layout, insulation gaps, solar gain, or unit location may be the cause. Additional indoor units, transfer grilles, fans, or weatherization may help.

Dry mode focuses on removing moisture and may not cool as strongly as cooling mode. It can be useful during humid shoulder-season days when the home feels damp but not hot.

For many ductless systems, dedicated heat or cool mode gives better control than auto mode. Auto mode can switch between heating and cooling unexpectedly during shoulder seasons.

Keep snow, leaves, and ice away from the unit and maintain clear airflow around it. Avoid burying it with snow from roofs, plows, shoveling, or drifting.

Common causes include a dirty filter, blocked outdoor coil, low refrigerant, weak capacitor, blower problems, duct leakage, frozen coil, or thermostat issue. Running it while frozen can cause more damage.

It is often near the water meter, pressure tank, basement wall where the service enters, or utility area. Every homeowner should locate it, label it, and test that it turns before an emergency.

A clogged aerator, partially closed valve, pressure tank problem, water treatment filter, well pump issue, frozen pipe, or municipal supply issue may be responsible. Start with fixtures and filters before assuming a major failure.

Mineral buildup, a failing water heater dip tube, clogged mixing valve, blocked fixture cartridge, or sediment in hot-water piping may be the cause. Water treatment may be part of the long-term fix.

A worn flapper, misadjusted fill valve, leaking flush valve, high water level, or stuck handle can waste a lot of water. Most running toilets should be repaired quickly, especially on well systems.

Low-flow toilet issues, excess paper, foreign objects, weak flush, venting issues, drain slope, or main line restrictions can cause repeat clogs. If multiple fixtures are affected, suspect a main drain problem.

Worn cartridges, washers, seats, seals, or mineral buildup are common causes. Repairing a drip saves water and can prevent staining, fixture damage, and nuisance noise.

Turn it off, never put your hand inside, use the manufacturer's reset or wrench method if provided, and call for help if it hums, trips, leaks, or will not rotate freely.

Chemical cleaners can damage pipes, traps, septic systems, finishes, and technician safety. A plunger, trap cleaning, mechanical snake, or professional drain cleaning is usually safer.

The trap may be dry, the drain may have biofilm, the vent may be blocked, or a seal may be leaking. If the smell is strong or widespread, get it checked promptly.

Possible causes include a failed wax or rubber seal, loose toilet, tank-to-bowl leak, supply leak, condensation, or a cracked fixture. Repeated leaking can damage flooring and framing.

Many tank water heaters last around 8 to 12 years, but water quality, maintenance, installation, and usage matter. Leaks, rust, poor recovery, and age often point toward replacement.

Flushing can reduce sediment in many tanks, but old or neglected heaters can sometimes leak after disturbance. Follow manufacturer instructions and consider professional service if the heater is older or heavily scaled.

Many homes use about 120°F to balance comfort, scald protection, and efficiency. Some systems or health circumstances require different settings, and mixing valves may be needed.

A mixing valve blends hot and cold water to deliver safer outlet temperatures. It is common with indirect water heaters, boilers, and systems that store water hotter than fixtures should receive.

The heater may be undersized, sedimented, miswired, have failed elements, a bad dip tube, a mixing valve issue, high demand, or a boiler-side problem on indirect systems.

A tank stores hot water for use later. A tankless unit heats water on demand. Tankless systems need proper sizing, venting, maintenance, fuel supply, and water-quality management.

Water hammer is a pressure shock caused by fast-closing valves, loose piping, high pressure, or missing arrestors. It can damage valves and piping over time.

Banging may be water hammer or loose pipes. Ticking is often thermal expansion as hot water pipes heat and cool. Proper supports, expansion space, and pressure control help.

If incoming water pressure is too high, a pressure reducing valve can protect fixtures, water heaters, appliances, and piping. Homes on wells usually use pressure switches and tanks instead.

Consider shutoff valves, pressure balancing shower valves, accessible cleanouts, water heater capacity, fixture spacing, venting, insulation for exterior-wall pipes, and code-compliant materials before walls are closed.

Maine health officials recommend annual testing for bacteria and nitrate/nitrite, and broader testing every few years for items such as arsenic, radon, uranium, hardness, metals, and pH.

A sulfur or hydrogen sulfide odor can come from the well, plumbing, water heater, or bacteria. Treatment depends on the cause, so testing and diagnosis are important.

Iron, manganese, sediment, corrosion, or disturbed well conditions can cause discoloration and staining. A water test helps determine whether filtration, softening, oxidation, or other treatment is needed.

Blue-green staining often points to copper corrosion caused by low pH or aggressive water. Testing pH, copper, and related chemistry helps determine the right treatment.

A softener may help if hardness causes scale, soap scum, spotting, fixture buildup, or water heater problems. A water test should confirm hardness before choosing equipment.

A well pressure tank stores pressurized water and reduces pump cycling. A failed tank can cause rapid pump starts, fluctuating pressure, switch failure, or premature pump wear.

Rapid cycling may be caused by a waterlogged pressure tank, bad pressure switch, incorrect air charge, leaks, or pump issues. It should be fixed quickly to protect the pump.

Check the well pump breaker, pressure switch area, power, and whether the pressure tank gauge is reading. If there is still no water, call a pump or plumbing professional.

Yes. Low water tables, shallow wells, heavy use, drought, and recovery-rate issues can reduce supply. A well professional can test yield and discuss storage, controls, or well improvements.

Black specks can come from carbon filters, rubber parts, manganese, or deteriorating plumbing components. Identify whether specks appear in hot water, cold water, or specific fixtures.

Treatment or bottled water may be needed depending on test results and use. Use a certified lab and follow Maine health guidance for drinking, cooking, and formula preparation.

Yes. Filters, softeners, neutralizers, UV lights, and reverse osmosis systems need media, cartridges, bulbs, salt, cleaning, and testing. Neglected treatment can stop working without obvious warning.

Insulate vulnerable pipes, seal air leaks, keep heat on, open cabinet doors during severe cold, protect crawl spaces, and know where shutoffs are. Pipes near rim joists and exterior walls need special attention.

Many homes need at least mid-50s heat, but risk depends on layout, insulation, wind exposure, plumbing location, and cold snaps. Winterized vacant homes may need water drained and antifreeze in traps.

A small drip can help vulnerable lines during short cold snaps, but it wastes water and is not a permanent solution. Fix air leaks and insulation problems for long-term protection.

Thermostats measure room temperature, not hidden pipe areas. Pipes can freeze in unheated basements, crawl spaces, cabinets, garages, exterior walls, or windy rim-joist areas.

Disconnect hoses, shut off the interior valve if present, drain the line, and use frost-free hose bibs when appropriate. Leaving a hose connected can trap water and split the fixture.

Listed heat tape can help when installed correctly, but it must match the pipe and application and be inspected regularly. Damaged or improper heat tape is a fire hazard.

Have the heating system serviced, set reliable heat, arrange property checks, shut off unnecessary water, protect pipes, test alarms, and consider professional winterization if the home will be vacant.

Without power, circulators and controls usually stop. Consider a properly installed generator connection, battery-backed controls where appropriate, freeze protection planning, and professional advice for hydronic systems.

Hydronic antifreeze can be useful in some systems, but it must be the correct type, concentration, and condition. Automotive antifreeze should not be used in residential heating systems.

High-efficiency furnaces, boilers, and heat pumps produce condensate. Poor slope, exterior discharge, unheated routing, or blocked traps can freeze and shut equipment down.

Mark vent locations before storms and keep intake and exhaust openings clear of snow, ice, shrubs, and drifting. Blocked vents can shut equipment down or create unsafe combustion.

Water heaters, pressure tanks, pumps, supply lines, traps, toilets, dishwashers, washing machines, and outdoor lines may need draining or antifreeze. Camps often require a systematic winterization process.

Multiple slow drains suggest a main line, septic, sewer, or venting problem rather than a single fixture clog. Stop using heavy water and schedule drain service.

Routine drain cleaning depends on usage, pipe age, grease, roots, and past issues. Kitchens, rental properties, older cast iron, and repeat problem lines may need periodic maintenance.

Avoid grease, fats, coffee grounds, eggshells, fibrous foods, paint, chemicals, wipes, and large food scraps. Even with a disposal, these can create buildup or septic problems.

No. Many wipes do not break down like toilet paper and can clog toilets, building drains, pumps, and septic systems. Put wipes in the trash.

Gurgling, sewage odors, wet areas over the leach field, slow drains throughout the house, or backups after heavy water use may point to septic trouble. A septic professional may be needed.

Many households pump every 3 to 5 years, but frequency depends on tank size, household size, garbage disposal use, water use, and solids accumulation. Follow your septic professional's recommendation.

A sump pump removes groundwater from a pit before it floods the basement. Many Central Maine basements benefit from one, especially where spring melt, heavy rain, or high water tables are issues.

Test it before spring thaw and heavy rain seasons by lifting the float or adding water to the pit. Make sure the discharge is clear and directed away from the foundation.

A backup is wise if the basement has finished space, valuables, a history of water, or frequent power outages. Many floods happen when storms knock out power.

The trap may be dry, the drain may contain buildup, or sewer/septic gases may be entering through a venting or trap problem. Add water to the trap and call if the odor returns.

Consider age, safety, repair cost, efficiency, parts availability, comfort, fuel use, and breakdown frequency. Replacement may make sense when repairs are expensive and the system no longer performs reliably.

Change or clean filters, keep outdoor units clear, check thermostat batteries, watch for leaks, keep vents open, know shutoffs, and schedule professional service for combustion, refrigerant, electrical, and code-regulated work.

Many installations, replacements, fuel-burning appliances, remodels, water heaters, plumbing changes, and construction projects may need permits or inspections. Requirements vary by town and job type, so verify with the local code office.

For plumbing, fuel-burning, oil, propane, natural gas, and some related work, ask for the appropriate Maine license and verify with the state board when needed. Insurance and references also matter.

Ask what is included, what is excluded, permit responsibility, equipment model numbers, warranty terms, payment schedule, cleanup, disposal, timeline, licensing, and what conditions could change the price.

Share equipment type, age, fuel, symptoms, error codes, photos, recent work, when the problem started, whether it is intermittent, and what you have already checked. Clear access to equipment also helps.