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★★★★★ 4.9 · 1,100+ reviews
Lic. CAC1819196 · CFC1431159
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Troubleshooting

AC Cools Downstairs Not Upstairs

Classic Tampa two-story problem, cold downstairs, hot bonus room or upstairs bedrooms. Usually ductwork or zoning, not the AC itself. FREE in-home evaluation. CAC1819196.

Quick Answer

Uneven cooling (upstairs hot, downstairs cold) in Tampa = 4 causes: (1) undersized return air ducts upstairs, (2) hot Tampa attic cooks ductwork running through it, (3) no zoning (one thermostat for whole house), or (4) closed/restricted supply vents. Fixes: duct repair $79+, zone system $2,599, insulation wrap $99/ft, or mini-split for bonus room $3,826+. Call (813) 343-2212.

4 Reasons Upstairs Stays Hot

Undersized Return Ducts (Most Common)

Call a tech

Symptom: Upstairs never reaches set temp. Airflow weak at upstairs vents.

Add return air path upstairs: $799-$1,999 depending on routing.

Hot Attic Heats Ducts

Call a tech

Symptom: Tampa attic reaches 140°F+ in summer. Uninsulated ducts lose cooling.

Insulation wrap $99/ft. R8 antimicrobial duct replacement $799/section.

No Zoning

Call a tech

Symptom: One thermostat controls whole house; works for avg temp but extremes suffer.

Honeywell zone system $2,599. Daikin Fit zone $4,999.

Closed Supply Vents

DIY possible

Symptom: Upstairs vents closed to “save energy”, actually increases pressure + reduces total airflow.

Open ALL vents. If still uneven, call. DIY check first.

What to Do Right Now

  1. Walk through every room, feel airflow at each vent.
  2. Open ALL supply vents (no closed vents).
  3. Check for obvious duct damage in attic (if safe).
  4. Call for FREE evaluation + quote.

FREE evaluation. Quick fixes (vent opening) $0. Duct repair $79+. Zone system $2,599-$4,999. Mini-split for problem room $3,826+. See pricing.

FAQ

Why do builders make undersized ductwork?

Cost-cutting in Tampa tract homes. Return ducts especially often undersized. Common in bonus rooms + upstairs additions.

Will a bigger AC fix it?

Usually no, makes it WORSE by short-cycling (worse humidity, still uneven). Fix ductwork first, then evaluate AC size.

Mini-split for the bonus room?

Often the smartest fix for Tampa bonus rooms. $3,826-$8,228 single zone. Dedicated cooling for problem room.

Zone system vs mini-split?

Zone: one AC, dampered ducts to different zones. Mini-split: separate system for specific room. Zone better for whole-home; mini-split better for one problem room.

How long to fix?

Duct repair: 1 day. Zone install: 1-2 days. Mini-split: 1 day. FREE quote in-home.

Need Tampa Service Today?

Same-day Tampa Bay. FREE diagnosis. (813) 343-2212.

★★★★ 4.8 (1,333 verified reviews)
Verified4.8★ · 1,333 reviews
🛡 FL Licensed: CAC1819196 · CFC1431159💼 $1M General Liability + Workers’ Comp🏠 Family-owned since 2017⚡ Same-day service
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Dusty did a great job and provided honest service and pricing for our AC repair. He also went above and beyond in giving sound advice on our new home renovations!

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Home Therapist is dependable, reliable, trustworthy and knowledgeable and provides ALWAYS Great Service!!!

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Their yearly plan provides 2 inspections and a bunch of other services for less price than what many other companies are charging for a single service visit. And service has been perfect…

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I had a great experience with Alejandro from Home Therapist Cooling, Heating, and Plumbing. He repaired two toilets and installed the water line to my new refrigerator after the delivery team refused…

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Reviewed by Richard MoralesCo-Owner & FL Class B Air Conditioning Contractor, Home Therapist

Richard co-owns Home Therapist Cooling, Heating, and Plumbing and holds the FL Class B Air Conditioning Contractor license (CAC1819196) since 2017. The company holds licenses CAC1819196 (FL Class B AC Contractor, Richard Morales) and CFC1431159 (FL Plumbing Contractor, Alex Morales), serving the Tampa Bay metro with a six-technician field team and 1,378+ verified five-star reviews.

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