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Furnaces usually fail in ways you can hear or feel before you can explain them. Describe what yours is doing and the evaluation starts there.
01NextGen · Furnace RepairTwo lists, really. The first is what a homeowner can reasonably check. The second is where checking stops and calling starts.
Set to Heat, set above room temperature, and with working batteries if it takes them. A furnace cannot run for a thermostat that is not asking it to.
A visibly clogged filter restricts airflow; blocked supply or return vents do the same thing from the other end. Both are safe to check and safe to put right.
If other gas appliances in the home have also stopped working, the problem may not be the furnace at all. Useful to know before anyone comes out.
Do not open the furnace cabinet, do not touch gas piping or valves, and do not test electrical components. If you smell gas, see smoke or sparking, or a carbon-monoxide alarm sounds, leave and contact the gas utility or emergency services first.
These are observations, not diagnoses. Several have more than one possible cause, which is why they are worth describing rather than solving from a list.
If you smell gas, hear hissing near the equipment, see smoke or sparking, or a carbon-monoxide alarm sounds, do not try to operate the furnace. Leave the area and contact your gas utility or emergency services before arranging service. A faint burning smell on the first run of the season that clears within a few minutes is a different thing; one that persists is not.
NextGen services residential heating either way. This is only about where the useful reading is.
A furnace has its own failure patterns and its own safety considerations, and those are what this page covers.
A system whose outdoor unit runs during heating is more likely a heat pump than a furnace, and it behaves differently enough to be worth reading about separately.
Plenty of homeowners genuinely do not know, and it is not a prerequisite for asking. The general heating page covers the symptoms that apply whatever the equipment turns out to be.
The order matters. Nothing is replaced before anyone knows what is wrong, and nothing is done before you have agreed to it.
When it started, what it does, and whether anything changed just beforehand. Sounds and smells count as information.
Combustion equipment is checked on site by a technician, not diagnosed from a symptom list at a distance.
What was found, what the options are, and what each costs — before any of them happens.
You decide. Pricing is explained up front, with no hidden fees.
Worth asking before you approve the repair rather than after it.
One repair is a repair. A third in as many seasons is a pattern, and patterns cost more than they appear to.
A single small part is a small decision. Several major components failing at once is a different conversation.
If the honest answer is not really, repairing today's fault returns you to a setup that was already falling short.
Joseph was great!
Justin and Kaylin were absolutely amazing today. They came wayyyy faster than expected. Very nice and worked very hard to help me get the best option for my air and heat unit. Would definitely recommend NextGen to another!
Great service. Friendly guy.
Customer feedback collected before the current website branding.
NextGen Heating & Cooling provides residential heating and cooling service across North and East Mississippi. Include the city and ZIP with a furnace request so coverage for the address can be confirmed alongside the service details.
Tupelo and surrounding communities within approximately 40 miles are the core local service area. That local radius describes the heart of the service footprint; it is not a boundary on the wider North and East Mississippi service area.
Frequently requested from Columbus, Starkville, Tupelo, Oxford, Corinth, New Albany, Pontotoc, Grenada — and communities across North and East Mississippi.
Explore Service AreasThe form starts with Heating selected. You can choose another service before submitting.