How is furnace sizing determined?
A factory-trained technician from our team will perform a room-by-room heat loss/gain calculation to acquire an accurate heat load and size your system based on this data.
What heating system has the lowest operating cost?
The operating cost of a heating system is affected by fuel type and unit efficiency. Heating systems operate on natural gas, propane, fuel oil, and electricity. Prices fluctuate depending on the region, but natural gas is typically the most cost-effective fuel in our area. The higher your system’s efficiency, the less fuel your unit will waste. In short, the lowest-cost system to operate is a high-efficiency heating system running on natural gas.
What gas furnace do the experts at Hillside recommend?
We recommend high-efficiency modulating and two-stage Armstrong Air furnaces. Ranging from 95 to 97 AFUE, they will keep you warm all winter without hurting your wallet.
Variable Speed Motor? What’s that!?
High-efficiency variable-speed blower motors (ECM) run on direct current, allowing them to operate over a wide range of speeds. An ECM’s variable speed means less electrical consumption, typically between 60 and 100 watts per hour, translating to about $250 in annual savings for an average homeowner in our region. An ECM delivers the most precise, consistent comfort in conjunction with an Armstrong variable-output furnace.
Furnace Staging? What does that mean? Are more stages better?
- Single-Stage: Operates at 100% or not at all.
- Two-Stage: Operates at a lower capacity most of the year, cycling more softly and longer for improved indoor comfort and reduced noise.
- Modulating: Adjusts capacity based on your home’s needs, offering quieter operation, lower costs, and enhanced cooling and dehumidification when paired with a central air conditioner.
Heat Pumps? What are those?
Central heat pump systems provide year-round comfort, cooling in summer, and efficient heating in winter. In winter, they transfer heat from the cold outdoor air into your home, and in summer, they do the opposite to cool your home.
What types of heat pumps are available at home?
- Central Air Source Heat Pumps: Work alongside an air handler or furnace for reliable performance even in cold mid-Atlantic winters.
- Ductless Heat Pumps (Mini-Splits): Require no ductwork, are at least 30% more efficient than conventional systems, and are great for retrofitting or whole-house systems.
- Water or Ground Source Heat Pumps: Use soil or wells for consistent temperatures, offering extremely low operating costs but higher installation costs.
Are heat pumps efficient?
Yes! Efficiency is measured separately for cooling (SEER) and heating (HSPF). Higher ratings mean greater efficiency.
Do I need supplemental heat for my heat pump in the winter?
Most modern heat pumps can handle winter temperatures. However, central ducted systems may require supplemental heat during extremely cold days. Many Mitsubishi ductless models are designed to heat efficiently down to -25°F.
Dual Fuel? What’s that?
A dual-fuel system combines a heat pump and a gas furnace, switching between the two for optimal efficiency based on outdoor temperatures.
How is a ductless heat pump different?
Ductless heat pumps (mini-splits) are variable-speed systems with no ductwork. They can be single- or multi-zone, offering customized comfort for each room with various indoor unit configurations.
MERV? What does that mean?
MERV (Minimum Efficiency Reporting Value) measures filter effectiveness:
- Disposable pleated filters: MERV 6
- Polyester reusable filters: MERV 8
- Electrostatic filters: MERV 10
- High-efficiency pleated filters: MERV 14–16
Can a furnace filter remove black mold?
While standard filters remove dust and allergens, electronic filters with pre-filters, plasma, or ionization can capture or destroy smaller particles like bacteria and viruses.
My house’s air is dry. Is my furnace at fault?
Winter air is naturally dry, and a furnace’s combustion process can compound the issue. Sealed combustion furnaces that draw air from outside can help maintain proper humidity.
When should I change my furnace filter?
Change conventional fiberglass or pleated filters every 90 days for optimal performance.
Is seasonal heating system maintenance worth it?
Yes! Regular maintenance extends your system’s life, maintains warranty eligibility, and ensures efficient operation.
Can I fix furnace issues myself?
Before calling for service, check:
- Fuel: Ensure fuel is available and turned on.
- Thermostat: Confirm it’s on and set correctly. Replace batteries if necessary.
- Power Supply: Check the circuit breaker and emergency switch.
- Registers: Ensure supply and return registers are open and unobstructed.
- Filter: Replace the furnace filter and restart the system.
Can my new furnace be vented through an existing chimney?
- 80% AFUE Furnaces: Often compatible with masonry or B-vent chimneys.
- 90%+ AFUE Furnaces: Require alternative venting due to low flue-gas temperatures.
Ready to Stay Comfortable Year-Round? Contact Us Today!
Whether you need expert advice on heating systems, a free quote for installation, or reliable maintenance services, Hillside Heating & Cooling is here to help. With over 70 years of experience, Hillside installs, maintains, and repairs leading brands of central air, heat pumps, and ductless mini-split systems. Our knowledgeable team is ready to ensure your home stays cozy and efficient through every season.
📞 Call us for a free quote at 302-738-4144 (DE & PA) or 410-398-5879 (MD).
Don’t wait—stay ahead of the weather with Hillside!
