- HEP HVAC
- Indoor Temperatures

Indoor Temperatures
Indoor Temperatures | HVAC Unit Replacement | Heating and Air Conditioning | Harrison
When the Tennessee heat waves roll in or winter nights dip below freezing, Harrison homeowners count on HEP’s Indoor Temp team to keep every room perfectly comfortable. Our certified technicians evaluate your existing system, calculate the ideal load for your square footage, and guide you toward energy-efficient options that lower utility bills from day one. With upfront pricing, financing choices, and installs that respect your schedule, we make HVAC unit replacement feel effortless—so you can get back to enjoying life on the lake or cheering at Central High without worrying about the thermostat.
Because we’re locals, we understand how humidity, pollen, and sudden cold snaps can strain aging equipment. That’s why every new unit we install is backed by robust warranties and HEP’s 24/7 emergency support. Let us swap out that noisy, power-hungry system for a quieter, smarter model that delivers steady air quality year-round and adds value to your Harrison home. Schedule your free estimate today and discover comfort you can feel—and savings you can see.
FAQs
How do I know it’s time to replace my HVAC unit instead of repairing it?
In Harrison’s four-season climate, most HVAC systems last 12–15 years with proper maintenance. If your unit is approaching that age, needs frequent or costly repairs (more than 30 % of the price of a new system), struggles to maintain set temperatures, or causes energy bills to spike, replacement is usually the most economical choice. A new unit will also give you access to updated refrigerants, quieter operation, and better humidity control.
What does a typical HVAC replacement cost in Harrison?
Prices vary by capacity, efficiency rating, and any ductwork or electrical upgrades required, but most complete heating and cooling replacements in the Harrison area run $6,500–$12,000 before rebates. High-efficiency heat-pump systems with variable-speed compressors can cost more up front yet deliver 25–40 % lower utility bills. We provide a free in-home evaluation and multiple system options so you can choose the best balance of comfort and budget.
How long will installation take and will I be without heating or cooling?
A straightforward change-out (replacing the indoor air handler/furnace and outdoor condenser) typically takes one full working day. More complex projects—adding zoning, replacing ductwork, or upgrading electrical service—can take 2–3 days. We schedule installations to minimize downtime, and temporary heaters or portable A/Cs can be provided at no charge if extreme weather is forecast.
What size HVAC unit should I buy for my home?
Proper sizing is critical for comfort and efficiency. Rather than relying on square-foot “rules of thumb,” we perform a Manual J load calculation that factors in Harrison’s design temperatures, insulation levels, window types, occupancy, and air infiltration. An accurately sized system will run longer, steadier cycles, prevent temperature swings, and reduce humidity in summer. Oversizing can shorten equipment life and raise utility bills.
Are high-efficiency systems worth the investment?
Yes. Harrison’s hot, humid summers and cold winters mean your HVAC system operates almost year-round. Upgrading from a 10–13 SEER air conditioner to an 18–20 SEER or installing a 96 % AFUE furnace can save $500+ annually on utilities for an average home. Many high-efficiency heat pumps also qualify for Duke Energy or PSE&G rebates, federal tax credits, and manufacturer incentives that cut initial costs by up to 30 %.
What warranties, financing, and maintenance plans do you offer?
Indoor Temperatures provides a 10-year parts warranty and a 1-year labor warranty on every new system we install; extended labor coverage up to 10 years is available. We partner with several lenders to offer 0 % APR financing for 12–60 months OAC, plus low monthly payment plans. Enrolling in our Priority Comfort Club adds twice-yearly maintenance visits, priority service, and a 15 % repair discount, protecting your investment and keeping manufacturer warranties valid.