If you need a furnace repaired or an air conditioner serviced, we'll send a local technician out to diagnose the specific problem and recommend solutions for you and your family. There will be a diagnostic fee for the visit, and any specific repairs will be an additional charge. If replacing your system is the best solution, the fee for the diagnosis will be credited toward the purchase and install of a new system.
Your HVAC system is an important appliance with a limited lifetime. Depending on use, with regular maintenance you can expect your furnace and air conditioner to last between 8-18 years before you will need to replace the old one. However, poor maintenance is one of the primary reasons for early replacement HVAC systems ahead of end of average life expectancy.
The fully licensed and insured, NATE-certified team from Marky Mark's Heating, Cooling & Plumbing, LLC is always available when you experience a problem with any make, model, or style of HVAC or plumbing system.  We offer 24/7 Emergency Repair in Thornton, CO & Westminster, CO and throughout the Northern Denver Metro area, handling residential and light commercial application, arriving promptly and prepared to complete the majority of issues in a single visit.
During the colder months of the year, the comfort of your home depends on the proper working function of your heating system. When your furnace breaks down or stops working properly, reach out to the heating experts at Horizon Services! We have nearly 30 years of experience providing reliable furnace repairs for homeowners throughout Delaware, Southern New Jersey, Southeastern Pennsylvania, and Northeastern Maryland. Our technicians are able to repair just about any type of home furnace using cutting-edge techniques and state-of-the-art tools. We can accurately diagnose the root of the issue and quickly get to work making the necessary repairs. We even offer same day service at no additional cost!
When a furnace maintenance is performed a combustion analysis should be performed to identify any problems that couldn't be found by a visual inspection. You want to know what the Carbon monoxide level your furnace is producing as well as the oxygen/CO2 levels and stack temperate. The analyzer will also give you a calculated efficiency rating with the information the analyzer receives. You should have >100ppm of Carbon monoxide output during normal operation of your gas furnace. When you have higher numbers or CO numbers increasing during operation their is a problem with the furnace the technician should then find the cause of. This is just a brief explanation I'm trying to get across to those who get their furnace maintained and to those who don't! Check to see if anyone in the company has a NCI certification for carbon monoxide/combustion analysis.

Furnace Service Company

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