How does a smart thermostat work?

Smart thermostats use sensors, algorithms, and Wi-Fi connectivity to monitor and adjust your home's temperature settings based on factors like occupancy, outdoor weather conditions, and user preferences.

Are smart thermostats compatible with my HVAC system?

Smart thermostats are compatible with most heating and cooling systems, including gas, electric, oil, and heat pump systems. However, compatibility may vary based on the specific model and features of your HVAC system. Our team of Specialists can help you determine if you have a compatible system.

Does this mean Lennox systems are unreliable?

No. Leak detection is required on all A2L systems, not just Lennox. The occasional nuisance trip is a side effect of extra-sensitive safety detection, and manufacturers are actively refining it.

How much does AC repair cost?

AC repair costs near Manchester, NH can range anywhere from $100 for a quick fix to $2,500 for more complex repairs . The price largely depends on what's going wrong — whether it's a minor issue or a major component that needs replacing.

Should I have regular A/C maintenance?

Yes, it's important to have regular maintenance for your central air conditioning system. Regular maintenance can help ensure that your AC unit is working efficiently, which can save you money on energy bills and prevent costly breakdowns. Here are some reasons why you should have regular central air conditioning maintenance: Improved Efficiency: Regular maintenance can help improve the efficiency of your AC unit, which can reduce your energy bills. When your air conditioner is working efficiently, it doesn't have to work as hard to cool your home. Longer Lifespan: Regular maintenance can also help extend the lifespan of your AC unit. By having your system serviced on a regular basis, you can prevent minor issues from turning into major problems, which can help you avoid expensive repairs or the need for a replacement system. Improved Air Quality: A well-maintained AC system can help improve the air quality in your home by reducing the amount of dust, pollen, and other allergens that circulate through your home. Cost Savings: By having regular maintenance, you can catch minor problems early, before they turn into major issues that require costly repairs. This can save you money in the long run. Overall, regular central air conditioning maintenance is a smart investment that can help ensure your system runs efficiently and effectively for years to come. It's recommended that you have your system serviced by a professional at least once a year.

What to do if my A/C stops working?

If your central air conditioning system stops working, there are a few things you can do to troubleshoot the problem before calling in a HVAC tech. Here are some steps you can take: Check the thermostat: Make sure the thermostat is set to the right temperature and is working properly. If the thermostat is not working, your AC may not turn on or off at the right times. Check the air filter: A dirty air filter can restrict airflow and cause your AC to stop working. Check the air filter and replace it if it's dirty. Check the circuit breaker: If the circuit breaker that controls your AC has tripped, reset it and see if that fixes the problem. Check the condenser unit: The condenser unit is the outdoor unit that houses the compressor. Check to see if the unit is running and if the fan is spinning. If the unit is not running, check to see if there is power going to the unit. If these steps do not fix the problem, it's time to call in a AC contractor. Our team can diagnose the issue and make the necessary repairs to get your AC up and running again. It's important to have a Specialist handle any repairs or maintenance on your central air conditioning system to ensure that it's done correctly and safely.

Why is my AC system blowing warm air?

If your AC is blowing warm air near Manchester, NH, it's a clear sign something’s off — and it could be more than just a quick fix. Common culprits include low refrigerant levels, clogged or dirty air filters, a faulty thermostat , or even electrical issues within the system.

Can I install a smart thermostat myself or do I need professional installation?

While some homeowners may be able to install a smart thermostat themselves, professional installation is recommended to ensure proper wiring, compatibility, and setup for optimal performance and reliability. One of the most important steps in installing a smart thermostat is to ensure the proper wires are connected to not cause a short to your system and that you have a common "C" wire available to power the thermostat.

What should I do if my furnace stops working?

If your furnace stops working, first check the thermostat settings, ensure the circuit breaker hasn't tripped, and verify that the furnace's power switch is turned on. If these basic steps don't resolve the issue, it's time to call a professional for furnace repair.

Why is my furnace making strange noises?

Strange noises such as banging, rattling, or squealing can indicate various issues, including loose components, a failing blower motor, or a problem with the ignition system. It's best to have a professional diagnose and repair the issue to prevent further damage.

How often should I have my furnace serviced?

It’s recommended to have your furnace serviced at least once a year, ideally before the colder months set in. Annual furnace maintenance ensures the system is running efficiently, reduces the risk of breakdowns, and extends its lifespan. Regular servicing helps identify potential issues before they become costly repairs. If your furnace is older or you use it heavily during the winter, more frequent checks might be necessary. Scheduling furnace service each fall is a great way to ensure peak performance and lower energy costs.

Why is regular furnace maintenance important?

Regular furnace maintenance is crucial for several reasons. First, it ensures your furnace operates efficiently, which can help reduce energy bills . Second, it helps extend the lifespan of the system by preventing wear and tear on vital components. Third, routine maintenance identifies potential issues early, allowing for repairs before they lead to more expensive breakdowns. Additionally, keeping the furnace clean and well-maintained can improve your home's indoor air quality by reducing dust and allergens. Overall, furnace maintenance provides a safer, more reliable, and cost-effective heating system.

What does it usually mean when a furnace is running but not producing heat?

If the furnace is running but not producing heat, that means we have an issue with flame. It could be a faulty (or properly tripped) safety device that's protecting the system from running, it could be a bad gas valve, or ignitor. If the furnace turns on and you hear clicking but no airflow and no heat, that means we have a different issue - usually something with the blower motor or maybe the control board.

Can something as simple as a dirty filter cause furnace problems in winter?

Yes, that can absolutely be the cause. If you have a dirty filter, it is clogged up, and the furnace is struggling to "breathe". Think of trying to breathe yourself through a straw, and then you pinch that straw. If the furnace can't breathe, it's going to trip on what we call "high limit," where the furnace wants to protect the heat exchanger from overheating. Make sure you have no air restrictions and then reset the furnace... it will need some time to cool down.

How much does it cost to replace my home AC system?

Expect to invest between $5,500 and $15,000 in and around Manchester, NH. This range reflects the many options available to fit your home’s size, energy needs, and comfort preferences. Your final cost depends on key factors like the unit’s cooling capacity, energy efficiency rating, the condition of existing ductwork, and any smart upgrades you choose.

What is the warranty on the system?

New Hampshire homeowners should ask about the warranty on the system and what it covers. A longer warranty can provide peace of mind and protect against unexpected repair costs. At GSMS, we're proud to offer our WOW Warranty where we will match the manufacturer warranty on our labor.

What size AC system do I need?

It's important to choose the right size system for your home based on factors such as square footage, insulation, and climate. At GSMS, our Project Specialists will perform a load calculation to determine the appropriate size for your home.

How long does an AC system last in NH?

The lifespan of a central air conditioning system can vary depending on factors such as the quality of the equipment, how well it's maintained, and how frequently it's used. Generally, a well-maintained central air conditioning system can last between 12 to 15 years. However, some factors can impact the lifespan of a central air conditioning system. For example, if the system is not properly installed, if it's used excessively, or if it's subjected to extreme weather conditions, it may have a shorter lifespan. It's important to keep in mind that regular maintenance can help extend the lifespan of a central air conditioning system. We recommend scheduling annual maintenance checks with a professional HVAC contractor to ensure the system is in good working order and to address any potential issues before they become major problems.

Do smart thermostats work with smart home ecosystems like Alexa or Google Assistant?

Yes, many smart thermostats are compatible with popular smart home platforms like Amazon Alexa, Google Assistant, and Apple HomeKit, allowing for seamless integration and voice control capabilities. Some of our smart thermostats have compatibility with your home's security system as well.

What to do when my furnace is not turning on?

There are a few things you as a homeowner can safely check before you make the call to GSMS. If your system has one, make sure to check the Emergency Shut-Off switch didn't get flicked by accident. This switch is usually located right next to your heating system or in your staircase walking down to your basement. Batteries! Check your thermostat has fresh batteries in it… this truly can be a culprit sometimes. Ensure you have fuel to feed your system. If those are all verified and you're still having an issue, it's best to reach out to GSMS to perform a complete diagnosis.

What type of heating system do I have?

Here in New Hampshire, we have many methods of heating our homes and businesses. First, you either have a gas (propane or natural gas) system or a oil system. This is the type of fuel you purchase to heat. The second part is you either have a forced air or forced water system. A forced water system, also known as a boiler, uses radiators/baseboards/radiant floor to heat your spaces. A forced air system, also known as a furnace, uses ductwork to blow air into each room. Our heating specialists are certified & trained to work on all types of heating systems!

What is the average cost of furnace installation in New Hampshire?

The average cost of furnace installation in New Hampshire typically ranges from $2,500 to $6,500 . Factors influencing the price include the type of furnace (gas, electric, or oil), the size and efficiency rating, and the complexity of the installation. Additional costs may arise from necessary modifications to ductwork or electrical systems. Labor costs in New Hampshire can also vary based on the contractor’s experience and location. It's advisable to obtain multiple quotes for a more accurate estimate tailored to your specific needs.

How can I ensure my furnace operates efficiently after installation?

To ensure your furnace operates efficiently after installation, follow these key steps: Schedule regular maintenance : Have a professional technician perform annual inspections and tune-ups. Change filters regularly : Replace air filters every 1-3 months to maintain optimal airflow and efficiency. Use a programmable thermostat : Set your thermostat to adjust temperatures based on your schedule, reducing unnecessary energy use. Seal ducts and air leaks : Ensure ductwork is properly sealed and insulate areas around doors and windows to prevent heat loss. Monitor performance : Keep an eye on your furnace's performance and address any unusual noises or issues promptly.

How long will my furnace system last?

The lifespan of your home’s systems depends heavily on how well they are maintained. Typically they last anywhere between 15–20 years

When do I need to replace my water heater?

Determining when to replace your hot water heater is a near-impossible task. We always say once your tank reaches 10 years old, any remaining use from it is a great risk. Making sure your tank is installed correctly is a big contributor to a long lifespan. Poor water quality in communities such as Merrimack does not help either! How often you use your water heater can also shorten or extend its lifespan.

Is a tank or tankless water heater better?

Tank versus tankless water heaters . A new-aged yet very important question to consider when replacing your hot water heater. Depending on your home, family, and lifestyle can greatly dictate which type of water heater is the best for you. Our team is more than happy to walk you through each system's pros and cons to help you make an educated choice.

How long will my traditional tank system last?

The lifespan of your home’s systems depends heavily on how well they are maintained. 6–12 years (we often see cheaper builder-grade tanks start failing as early as year 6!)

What brand of whole-home humidifier does GSMS install?

We install Aprilaire exclusively. It's the same design Lennox uses in its Healthy Climate product line, and we've found it to be the most reliable, best-stocked option for New Hampshire homes.

What's the difference between a bypass and a steam humidifier?

A bypass humidifier uses your furnace's heat to convert water into vapor and needs no electrical hookup. A steam humidifier generates its own vapor and needs a dedicated outlet. The right choice usually comes down to your home's square footage. See our full comparison .

When is the best time to install a smart thermostat?

The best time to install a smart thermostat is before the start of a new heating or cooling season, allowing for immediate optimization of comfort and energy efficiency. Alternatively, incorporating it during HVAC system maintenance or upgrades ensures seamless integration and maximum effectiveness. Installing a smart thermostat also makes sense when seeking to save on energy bills, enhance home comfort and convenience, or during home renovations or smart home upgrades. Proactively installing before seasonal temperature extremes ensures readiness to adjust settings for optimal indoor comfort.

Can I install a whole-home humidifier with a mini-split or boiler system?

No. Whole-home humidifiers require a forced-air duct system to distribute moisture through your home.

What humidity level should I set my humidifier to?

We recommend 35 to 45 percent for most NH homes. The 800LC's automatic dual-sensor control reads outdoor temperature and adjusts on its own, so for normal trips and weekends away, it's best to set it once and let it run. If you're leaving for an extended stretch, like heading south for the winter, that's a different conversation, worth asking your Specialist about at your next visit.

How often does a whole-home humidifier need maintenance?

Once a year. That visit replaces the water panel and confirms your system is set for the season.

How much does a whole-home humidifier cost installed?

Pricing depends on your home's electrical setup and ductwork, but visit our pricing page for current bypass and steam installed pricing.

What's the difference between the In-Duct Purifier and the PureAir?

The In-Duct Purifier uses a UVC lamp and carbon cell to target odors and VOCs, a great option if you already have a solid pleated filter in place. The PureAir adds a MERV-16 filter and photocatalytic oxidation technology on top of that, actually filtering out particles, bacteria, and mold, not just neutralizing odor. It's built for homeowners who want the highest filtration level available.

Is UV air purification safe?

Not all UV light is the same. Standard UV lights can produce ozone, which is harmful to breathe, especially for people with asthma. Both products we install are engineered around this: the In-Duct Purifier produces zero ozone emissions, and the PureAir goes a step further, actively breaking down ozone already present in your home's air.

Can a UV air purifier be added to a mini-split or boiler system?

No. These products require a forced-air duct system to work.

How often does a UV air purifier need maintenance?

Annually, for both products. The In-Duct Purifier needs a new carbon cell and UVC lamp; the PureAir needs a new filter, UVA lamp, and PureAir cartridge.

How long does installation take?

The In-Duct Purifier typically takes a couple of hours and can be paired with a filter upgrade or done on its own. The PureAir installation timeline depends on your ductwork and electrical setup.

How much does a UV air purifier cost installed?

It depends mainly on your home's electrical setup. Visit our pricing page for current installed pricing on both products.

What does the Lennox A2L sensor fault code mean?

It means your system's Refrigerant Detection System sensed a change in the air and safely paused the equipment. It can be a harmless nuisance trip or a real leak, so it should be verified before you keep running the system.

Is the A2L sensor code dangerous?

The code itself is a safety feature working as intended. What matters is the cause. Because a nuisance trip and a real leak look the same from the thermostat, the safe step is to have it checked.

Can I clear the Lennox A2L sensor code myself?

The code sometimes clears once the air around the sensor is clear, but that does not tell you what set it off. Repeatedly clearing it can mean running the system with an unaddressed leak, so we recommend a quick professional check instead.

How do you tell a false alarm from a real leak?

We run a leak search using a specialized tool that sniffs for refrigerant, confirm the system's refrigerant levels, and test the sensor itself. Those checks tell us whether it is a nuisance trip, a real leak, or a faulty sensor, which is not something you can determine from the thermostat.

Why did the code appear when nothing seems wrong?

These sensors are very sensitive and can react to fumes from cleaning products, paint, or new flooring. That is a common and harmless cause, but it is still worth confirming.

Zak Downing, Author at GSMS Air•Heating•Plumbing

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Author: Zak Downing