There is no single number, and any company that quotes one before seeing your house is guessing. In Lubbock the price is driven by four things: the tonnage your house actually needs, the efficiency tier you choose, whether the furnace and coil are replaced alongside the condenser, and how much ductwork and electrical has to be corrected. A like-for-like swap sits at the bottom of the range; a full changeout with duct repairs sits at the top. Hub City Heating & Air is a referral service and does not set prices — costs vary, call for a quote. Call (414) 429-5333 and we will connect you with an independent local HVAC pro who will quote your house.
Replacement is the biggest HVAC decision most homeowners ever make, and it is the one where the numbers published online are least useful. A figure from a national cost calculator blends Phoenix, Minneapolis and Atlanta, and none of those houses has a 104-degree design day and a cotton harvest blowing through the condenser every October. What follows is how the number is actually built here, so you can read a quote instead of guessing at one.
What actually drives the price of a new HVAC system?
Five things, in roughly descending order of impact:
- Tonnage. Capacity is the largest line item, and bigger is not better — an oversized unit short-cycles and wears out early. A load calculation should set the size, not the old unit's size. Our AC sizing guide for Lubbock homes explains how.
- Efficiency tier. A baseline single-stage system and a high-efficiency two-stage or variable-speed one are different products at different prices.
- Scope. Condenser only, condenser plus coil, or a full changeout with the furnace. Each step adds equipment and labor.
- Ductwork and airflow. Undersized returns, crushed flex runs and leaking plenums are common in older South Plains houses, and a good contractor prices fixing them rather than bolting a new system onto bad ducts — see leaky air ducts in Lubbock.
- Electrical and code work. A new disconnect, a correctly sized breaker, a pad, a new line set or a condensate overflow switch are all legitimate line items.
Why do two quotes for "the same system" come back so different?
Usually because they are not the same job. Read past the brand name and compare the scope line by line. One quote may include a new evaporator coil and a replaced line set while the other reuses both. One may include a load calculation, a thermostat, a permit and a duct seal; the other may be equipment and labor only. One may carry a longer labor warranty on top of the manufacturer's parts warranty.
Ask every contractor for the same four items in writing: model numbers for the outdoor unit, indoor coil and furnace; the tonnage and the load calculation behind it; exactly what is and is not included; and the warranty terms for parts and labor. When those four match, the prices become comparable. When they do not, the cheaper quote is often cheaper because it is doing less.
Thinking about replacing before winter?One call and we'll connect you with a local Lubbock HVAC pro who can quote it.
📞 (414) 429-5333Do I have to replace the furnace at the same time as the AC?
Not always, but it is worth pricing both ways. In a typical Lubbock home the furnace and the air conditioner share one blower cabinet and one duct system, so the indoor half of the cooling system physically lives inside the heating equipment. If the furnace is roughly as old as the condenser, doing both at once means one labor visit instead of two, with the blower and coil matched to the new system.
If the furnace is much newer, a condenser-and-coil changeout can be entirely reasonable. What to avoid is a new high-efficiency outdoor unit paired with an old blower that cannot move the air it needs — the rated efficiency never materializes. For heating-side questions, our furnace and heating repair page is the place to start.
Does a higher SEER2 rating pay for itself in West Texas?
More often here than in most of the country, because the cooling season is long and brutal. A system running from May into October has far more hours over which to recover the premium than one running six weeks a year. The payback still depends on your run hours, your electricity rate and how long you plan to stay, and the step from baseline to mid-tier usually pays back faster than the step from mid-tier to top-tier. Our explainer on SEER2 ratings walks through how to read the number. Efficiency does nothing for a system fighting leaking ducts, so fix those first.
Is it time to replace, or should I repair it one more season?
That depends on age and what just broke. Systems here commonly give 12 to 15 years rather than the 20 quoted for milder regions — see how long an AC lasts in Texas heat — and a compressor failure or a leaking coil past that mark is usually where repair money is better spent on replacement. A capacitor on an eight-year-old unit is not. Our guide to repairing or replacing an AC in Lubbock lays it out. Either way, get the diagnosis before the sales pitch: a replacement quote that arrives before anyone has run a load calculation is a reason for a second opinion.
How do I get a replacement quote in Lubbock?
Hub City Heating & Air is a referral service, not a contractor — we do not perform installations, set prices or quote jobs ourselves. Call (414) 429-5333 and we will connect you with an independent local HVAC pro who will come out, size the system properly and give you a written quote. You can also start from our AC replacement and installation page, our AC repair page, or request a callback. Pricing, financing, scheduling and any guarantees are set by the independent contractor, and costs vary — call for a quote. Autumn is the easiest time of year to get this done, before the first freeze fills every contractor's board.
Frequently asked questions
How much does HVAC replacement cost in Lubbock?
There is no single figure, because the price is built from your house rather than from a price list. The four biggest factors are the tonnage your home actually needs, the efficiency tier you choose, whether the furnace and evaporator coil are replaced along with the outdoor unit, and how much ductwork or electrical work has to be corrected. A like-for-like swap sits at the low end of the range and a full system changeout with duct repairs sits at the high end. Hub City is a referral service and does not set prices, so costs vary and the quote comes from the independent contractor who sees the house.
What makes two HVAC replacement quotes so different?
Almost always a difference in scope rather than a difference in markup. Compare the model numbers of the outdoor unit, indoor coil and furnace, the tonnage and the load calculation behind it, exactly what is included, and the parts and labor warranty terms. A quote that reuses the old coil and line set, skips the load calculation and leaves the ductwork alone will always look cheaper than one that does not.
Should I replace the furnace and the AC at the same time?
Price it both ways. In most Lubbock homes the two share a blower and ductwork, so if the furnace is roughly as old as the condenser, doing both at once means one labor visit and a blower and coil correctly matched to the new system. If the furnace is much newer, a condenser-and-coil changeout can be the right call. What to avoid is a new high-efficiency outdoor unit paired with an old blower that cannot move the airflow it needs.
Is a higher SEER2 system worth it in Lubbock?
Often, because the cooling season here runs from May into October and gives the efficiency premium many more hours to pay itself back than it would in a milder climate. The payback still depends on your run hours, your electricity rate and how long you will stay in the house, and the step from baseline to mid-tier usually pays back faster than the step from mid-tier to top-tier. Leaking ducts cancel out much of the benefit, so have those addressed first.
How long does an HVAC replacement take?
A straightforward changeout on an existing system is commonly a one-day job, and a full system with duct modifications can run into a second day. Permitting, equipment availability and any electrical work can add time before the install date. Ask the contractor for the expected schedule in writing alongside the quote, and expect longer lead times during the first cold snap or the first heat wave of the year.