Have Stranger Sounds been coming from your house? Have you noticed some rooms seem to have colder air than others? Mysterious popping and banging noises? Is your furnace just shutting off without warning?

You may need to replace your furnace if you answer yes to the following:

  1. Is your furnace older than 12 years? Household systems don’t last forever. If your furnace is around that age, you may want to start thinking about an upgrade.
  2. Are your energy bills going up? Over time, furnaces lose efficiency, particularly if they haven’t been regularly maintained. As your system gets older, you may find you need to run your furnace longer to get that same toasty, warm feeling. Naturally, the longer you run it, the more oil or natural gas you use.
  3. Do you constantly adjust the thermostat? If some rooms are cooler than others and you have to turn up the thermostat to compensate, it could mean your furnace cannot properly distribute the air to maintain a consistent temperature.
  4. Have you started to hear strange noises coming from your furnace? If you hear banging, squealing, and rattling it could be a sign your furnace is going to fail.
  5. Have you had multiple repairs in the last couple of years? As furnaces age, they may need more repairs to keep them running. Most cases furnaces have more repairs in the last two years of their lifetime. If you are noticing more repairs, a new furnace may be in the near future.


If you have no heat, find out the first 5 things to check before you call for service.


Complete annual tune-ups are essential for preventing frequent failures, inefficient performance, and poor indoor air quality while maintaining warranties.

Furnaces and boilers that are serviced annually reach their maximum lifespan, efficiency, safety, and maintain their warranties as some manufacturers will void your warranty if you fail to do so! Manufacturers recommend annual inspections and maintenance by a qualified HVAC technicians. In the fine print, warranties don’t cover damage to the furnace/boiler caused by improper maintenance.

Keep in mind, this isn’t just about warranties; it’s also about preventative maintenance. Catching a problem before your furnace quits working on a cold winter’s night. Franticlly calling a heating contractor in DE, PA, or MD for a heating emergency on a weekend evening will cost you much more money.

Call Hillside to come and inspect your furnace at 302-738-4144 or 410-398-5879 or contact us to schedule service. Our furnace/boiler repair and maintenance services are available to homeowners throughout New Castle County, DE, Southern Chester County, PA and Cecil County, MD.

Our professional staff is fully trained to install, maintain, and repair oil, natural gas, propane gas, and electric heating systems. This includes hot air, hot water, boiler, heat pump, and water heaters (both traditional tank and modern tankless on-demand water heaters).

Call Hillside Heating and Cooling today for furnace maintenance, furnace repairs, or a FREE estimate for new furnace sales and installation in DE, PA, and MD at 302-738-4144 or 410-398-5879 or contact us to schedule service.

★ ★ ★ ★ ★

Overall the years with your company, ALL the technicians have been great. They are nice, knowledgeable and have great customer service. Thank you again.~ 100% rating – Customer review by  A.H. from Townsend, DE on 10/03/19