FAQ's

Get the information you need to make an informed purchase and review commonly asked HVAC questions. We cover everything from energy efficiency ratings and tax credits to product and equipment specifications.

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What is CEE?

The Consortium of Energy Efficiency (CEE) is a network of gas and electric efficiency program administrators. They set CEE product tiers that differentiate highly efficient HVAC equipment for incentive and promotion programs.

What is NEEP? 

Northeast Energy Efficiency Partnerships is a nonprofit organization in the Northeast and Mid-Atlantic region. Their goal is to accelerate energy efficiency, electrification, and grid flexibility in order to reduce climate pollution. Furthermore, they aim to build a future with affordable, sustainable, and resilient energy. For more information, visit NEEP’s website.

Does the Inflation Reduction Act apply to me?

If you purchased HVAC equipment on or after January 1, 2023, then you may be eligible for additional tax credits and rebates. Discuss the qualifications with your contractor or visit our Tax Credits & Rebates page.

Is my unit still under warranty?

Durastar makes it easy to check warranties. Simply type your model number into our search bar or learn more on our Warranty page.

Do I need to register each piece of equipment for a split unit system?

Each piece of HVAC equipment carries its own warranty and needs to be registered individually. There is no registration for Durastar unitary. You get 5-year parts with no registration.

Are there extended warranty programs?

You can purchase an extended warranty for an additional 5 years. If you’re interested in an extended warranty on your Durastar HVAC equipment, then discuss your options directly with your contractor.

How do I file a warranty claim on my Durastar equipment?

Durastar stands behind its equipment and offers industry-premium warranties. If you need to file a claim, download and submit the applicable claim form. Please note that there is a separate claim form for unitary equipment, PTACs/PTHPs, and mini-splits. You can find these forms and learn more about your coverage by visiting our Warranty page.

What is the difference between single-zone and multi-zone?

If you’re looking to set a consistent temperature throughout your entire home, a single-zone unit will accomplish just that. However, if you would like to control the temperature in separate areas of the home, independently, then opt for a multi-zone system. For example, you may want to set your upstairs cooler than the rest of the home.

Which climate zone am I in? 

The US Department of Energy breaks up the US into eight regions. Use the link below in order to determine your zone.

Find my zone

Which HVAC unit is the best to install in my home?

When it comes to installing a new heating and cooling system in your home, there are many variables to consider. In order to determine which HVAC solutions will suit you best, talk with your contractor about your specific needs. Then, they can make professional recommendations.

What is AHRI? 

AHRI stands for Air Conditioning, Heating, and Refrigeration Institute. It is a certification program that evaluates heating, air conditioning, ventilation, and commercial refrigeration equipment in order to ensure they perform according to the manufacturer’s claims. To find your AHRI number, go to www.ahridirectory.org.

What is an HVAC evaporator coil?

Evaporator coils are located inside your home and work with your air conditioner and furnace. Depending on whether you are heating or cooling a space, the coils pull in existing air to cool it or they add heat to warm it up. In essence, coils are one of the most important pieces to your HVAC system and are responsible for the heat exchange.

What is the benefit of an all-aluminum coil?

Unlike copper which may rust over time, all-aluminum coils do not. In addition, they are more resistant to micro-leaks which increases the longevity and efficiency of your unit.

What is the difference between an 'A' coil and 'N' coil?

‘A’ coils are formed using two slabs of fins – these types of coils have a surface area similar to a slab coil, however, they are installed without transition ducting. Alternatively, ‘N’ coils use three fin slabs. This arrangement increases the coil’s surface area and, therefore, accommodates more refrigerant. As a result, it operates more efficiently and generates more heat.

Can I use a PTAC in my home?

Yes! PTACs are commonly used in homes as well as commercial spaces, like hotels. They are ideal for individualized, easy to adjust temperature control.

Which is quieter, a PTAC or Mini-Split?

Unlike mini-split units which require an outdoor compressor, PTACs are one complete unit. Therefore, PTACs may generate more noise than mini-splits.

How easy is it to install or replace a PTAC or PTHP?

One of the benefits of PTACs or PTHPs is the ease of installation or replacement, however, we do recommend teaming up with a contractor to ensure the equipment is properly placed.

What is AFUE?

Annual Fuel Utilization Efficiency (AFUE), is a standardized measure of efficiency for how furnaces and boilers convert energy to useable heat.

What is the main difference between a furnace and a heat pump?

Furnaces burn fuel to generate heat whereas a heat pump draws air from outdoors across the condenser coil, either releasing heat to the outdoor air when in cooling mode or absorbing heat from the outdoors, even in the coldest weather in heating mode.

How often should my furnace be serviced?

Durastar recommends your furnace to be serviced at least once a year to ensure it is functioning optimally and providing maximum comfort.

Is an air handler or furnace better?

Both Durastar’s furnaces and air handlers offer dependable options for distributing even airflow throughout your home. When selecting between the two, consider your location and climate. For areas with long warm seasons, an air handler will likely be more energy-efficient, however, we recommend discussing your options with a licensed contractor to ensure the best combinations of HVAC products for your home.

What does variable speed mean?

Variable speed air handlers operate at the lowest possible speed to achieve your desired indoor temperature. This results in increased energy efficiency. Variable speed units are also quieter than standard units.

Is a two-stage air handler more efficient than a single-stage air handler?

Yes, when paired with a two-stage outdoor unit, both units will operate on low capacity during milder days, requiring less energy; and switch to full capacity and power when needed.

What is EER2?

EER2 is Energy Efficiency Ratio 2. It’s the cooling capacity of an air conditioner or heat pump unit for a specific amount of energy used in a specific testing climate.

Which AC units are the quietest?

Decibels (dB) are the unit of measure for the intensity of noise. The lower the decibel level, the quieter your unit will be. We share key specifications, such as decibels, on our product pages so you can quickly compare your options.

What does SEER2 mean?

SEER2 stands for Seasonal Efficiency Energy Ratio which compares the energy efficiencies from different central air conditioners and heat pump systems. The higher the rating, the more efficient the system.

What is a mini-split system?

Mini-splits are a ductless solution to heating and cooling individual rooms or spaces. They are discrete and reduce installation efforts.

Can I have a multi-zone mini-split system?

Yes! Mini-splits can be configured for single-zone or multi-zone applications. Each unit is connected to one outdoor unit.

Do I need a contractor to purchase and install my mini-split system?

You can purchase Durastar’s mini-split units directly from Build with Ferguson. However, we recommend working with a contractor to ensure you acquire the best combination of products, install the system properly, and take full advantage of the products’ warranty. Please note that warranties may be voided if not installed by a licensed professional.

What’s more important, HSPF or SEER?

If you live in an area where winters are mild, then pay extra attention to the SEER rating. Conversely, if you live in the north where winters are more extreme, then the HSPF value is more important.

What are the main differences between a heat pump and a mini-split heat pump (otherwise known as a ductless heat pump)?

Generally, heat pumps are integrated into your home’s central heating and cooling system. That means the heat it provides travels through ducts into various rooms throughout your home. Alternatively, mini-split heat pumps, or ductless heat pumps, distribute heat directly into the room where they are installed.

What is HSPF2?

HSPF2 stands for Heating Seasonal Performance Factor 2. HSPF2 is a standardized rating used by all heat pump manufacturers to compare energy efficiencies between heat pumps. The higher the HSPF2, the more efficient the system operates during cold seasons.