Seasonal Guide
Hurricane Prep for HVAC + Plumbing
Tampa hurricane season runs June-November. Here’s how to prep your AC + plumbing.
Quick Verdict
Before a Tampa hurricane: (1) turn off AC + flip outdoor unit breaker (prevents surge damage), (2) secure outdoor AC condenser with hurricane tie-down kit, (3) fill tubs + containers with water, (4) photograph systems for insurance, (5) ensure sump pump works if applicable. After: inspect for damage before restarting. Call (813) 343-2212 for post-storm inspection.
Hurricane Preparation Checklist
| Action | When | Why |
|---|---|---|
| Turn OFF AC at breaker | Before storm | Prevents surge damage to compressor |
| Turn OFF main water supply | If boil-water advisory | Prevents contaminated water |
| Hurricane tie-down kit | Pre-season | Included in our installs, verify condition |
| Surge protector install | Before season | $469 prevents most electrical damage |
| Fill tubs + containers | Day before | Water for flushing if supply lost |
| Secure loose items near AC | Before storm | Prevent impact damage to outdoor unit |
| Photograph systems | Pre-season | Insurance documentation |
| Generator fuel | Pre-season | If you have one |
| Sump pump test | Pre-season | If low-lying property |
What We Recommend
Pre-season (May/June): install surge protector ($469), test hurricane tie-downs, schedule Premium Therapy Plan tune-up ($20/mo), check sump pump if applicable.
24-48 hours before: photograph systems, fill tubs, turn off AC + outdoor breaker as storm approaches.
After storm: before restarting AC, check outdoor unit for debris + damage. Don’t run submerged condensers. Call us for post-storm inspection if any damage visible.
The Three-Phase Hurricane Timeline
Most Tampa homeowners wait until the cone of uncertainty lands on Hillsborough County before they start prep. By then, hardware stores are empty and it is too late to schedule a surge protector install. Here is the timeline we use with our own customers, built on 9 years of storm calls across Tampa Bay.
Pre-Storm: 48 Hours Before Landfall
Check that your whole-home surge protector LED is green (not red or off). Verify hurricane tie-down straps are tight and not corroded. Test your sump pump by pouring a 5-gallon bucket into the pit and confirming it activates. If you are in a Category 3 or greater cone and live in a flood zone, drain the water heater tank to prevent contamination if floodwaters reach it. Stock generator fuel now, not 12 hours before landfall when every gas station has lines. Clear all debris within 20 feet of the outdoor condenser. Photograph every HVAC and plumbing system with model and serial numbers visible, save to cloud storage.
Storm Day: 0 to 12 Hours Before and During
If the City of Tampa issues a boil-water advisory, shut off your main water supply at the street. Flip the outdoor AC breaker OFF before the first hurricane-force gusts arrive. The biggest surge damage in Tampa Bay storms happens mid-event when transformers fail under wind load, not after the storm passes. Close all interior shutoff valves for pool equipment, irrigation, and outdoor spigots. Elevate valuable furniture on blocks if you are in a Zone AE or VE flood area. Move portable dehumidifiers and plug-in appliances to a safe interior location.
Post-Storm: 0 to 72 Hours After
Do NOT flip the AC breaker back on until you visually inspect the electrical panel and the outdoor unit. Look for burnt smell at the air handler, melted wiring near the breaker, debris inside the condenser cabinet, and water intrusion above the concrete pad. Test the condensate drain by pouring a cup of water into the drain pan, it should flow freely. If municipal water was disrupted, flush your water lines for 3 to 5 minutes before drinking. Run hot water for 5 minutes to confirm the water heater survived without airlock or sediment stir-up.
Tampa Bay Flood Zones and What To Do
Your FEMA flood zone determines almost everything about how you prep. Pull your zone designation from the FEMA Flood Map Service Center before storm season.
Zone AE: 1% Annual Chance, Base Flood Elevation
Covers most of South Tampa (Bayshore, parts of Hyde Park, Davis Islands), the Gandy corridor, Ybor low-lying blocks, and parts of Temple Terrace along the Hillsborough River. Your outdoor condenser pad must be elevated above Base Flood Elevation, typically 8 to 12 inches above existing grade, to qualify for full flood insurance payout. Check your AC pad height before hurricane season. Consider a backflow preventer on the sewer main ($400 to $800 installed). Flood insurance is a separate policy from homeowners, and claims require evidence of pre-storm condition.
Zone VE: Coastal High Hazard with Wave Action
Covers the barrier islands: Clearwater Beach, Indian Rocks Beach, Indian Shores, Madeira Beach, Treasure Island, St. Pete Beach, Pass-a-Grille. Hurricane straps are mandatory by code here, not optional. Outdoor AC units should be mounted on rooftop platforms or second-story decks whenever practical. VE residents should have a full evacuation plan that includes main water off, main breaker off, AC breaker off, water heater breaker off.
Zone X: 500-Year or Minimal Risk
Covers most interior Hillsborough, northern Pasco, and inland Pinellas neighborhoods. Standard prep applies, but do not skip the sump pump test if you have any basement, crawlspace, or below-grade mechanical room. Zone X flooding still happens when stormwater drains back up, we see it every year in Carrollwood, Town N Country, and Brandon after 8-plus inch rain events.
Generator Sizing for AC and Plumbing
Here is the single biggest mistake Tampa homeowners make: they buy a 7,500W portable generator, plug it into the house with an interlock kit, then discover their 4-ton AC will not start. Startup surge is not running wattage, and most generators are sized wrong for cooling load.
| Load | Running Watts | Startup Surge |
|---|---|---|
| 3-ton central AC | 5,000W | 15,000W |
| 4-ton central AC | 6,500W | 18,000W |
| 5-ton central AC | 8,500W | 22,000W |
| Well pump (1 to 2 HP) | 1,500 to 2,500W | 4,000 to 7,000W |
| Sump pump | 500 to 1,000W | 1,500 to 2,500W |
| Electric water heater | 3,500 to 5,500W | n/a |
| Refrigerator | 600 to 800W | 1,800W |
Soft-Start Kits: The Tampa Workaround
A soft-start kit (around $350 installed) reduces AC startup surge by roughly 65%. A 4-ton AC that would normally need 18,000W surge drops to around 6,300W surge, which a 7,500W portable generator can actually handle. For most Tampa homeowners, a soft-start kit is the single highest-value hurricane upgrade, cheaper than a bigger generator and lets you run the AC off what you already own.
Interlock Kit vs Transfer Switch vs Whole-Home Standby
Interlock kit: $400 to $800 installed, manual breaker swap, cheapest code-compliant option. Transfer switch: $1,500 to $2,500 installed, covers pre-selected circuits, no main-breaker juggling. Whole-home standby (Generac, Kohler, Briggs): $8,000 to $14,000 installed for a 14-22kW natural gas unit, auto-starts within 30 seconds of outage, runs unlimited on utility gas. For most Tampa Bay single-family homes under 2,500 sq ft, an 18kW whole-home unit is the sweet spot.
Sewer Backup and Backflow Prevention
This is the storm hazard Tampa homeowners think about least and pay for most. When Tampa Bay lift stations flood or lose power, raw sewage backs up through the municipal main and pushes into the lowest fixtures in low-lying homes. We see it every major storm in South Tampa, St. Pete south side, and any home sitting below 12 feet of elevation.
Is Your Home at Risk?
Signs your home is vulnerable: gurgling drains during normal heavy rain, slow drains across multiple fixtures simultaneously, prior sewer backup history in the neighborhood, home elevation below 12 feet, or a lateral that connects to a municipal main running under low-lying streets. Palma Ceia, older blocks of Hyde Park, parts of Seminole Heights with clay-pipe laterals, and most of South St. Pete south of Central Avenue are the usual suspects.
Your Prevention Options
A backflow preventer installed on the main sewer lateral stops roughly 90% of backups. Installed cost runs $400 to $800 depending on access and whether the city requires a cleanout upgrade. Check valves are cheapest but can stick open, gate valves require manual operation, automatic flood gates (Mainline Backwater Valve or similar) open and close with flow direction and are the best hands-off option. During the storm itself, close drain caps in any low-lying bathrooms and plug floor drains with rubber testing balls from any hardware store.
After a Backup
If you see any sewage in your home post-storm, do not attempt DIY cleanup. Sewage contains pathogens that require professional remediation. Call us and call your insurance carrier. Document everything with photos before cleanup begins.
After-Storm AC Restart Procedure
More AC systems die from wrong-order restart than from the storm itself. Follow this sequence every time.
- Visual inspection first. Walk to the outdoor unit. Check for impact damage, debris inside the cabinet, water above the concrete pad, bent fins, or displaced refrigerant lines.
- If submerged, stop. Water above the pad level means potential internal contamination. Do not restart. Call us for a FREE diagnosis.
- If intact, flip outdoor disconnect ON first, then the breaker in the panel. If the unit was off for 24 or more hours, wait 15 minutes before starting. This lets compressor oil settle back into the sump.
- At the thermostat, switch to COOL and set 2 degrees below room temperature. Do not drop it 10 degrees, the compressor does not run harder to cool faster.
- Listen for normal startup. You should hear 5 to 10 seconds of contactor clicking, then a steady compressor hum. Screeching, rapid clicking, or silence followed by breaker trip means something failed during the storm.
- No cooling after 15 minutes? Shut off at the thermostat and call. Most post-storm failures are blown capacitors, failed contactors, or surge-damaged control boards, all diagnosable same-day.
- Check the indoor condensate drain. If the system sat off during an extended outage, the drain line can grow algae that plugs the drain. Look for pooled water near the air handler.
- Let it run one hour, then measure. Normal Tampa post-storm recovery on a properly sized 4-ton system is roughly 1 degree drop per 10 minutes indoors. Slower than that means a problem.
Insurance Documentation Checklist
The difference between a $5,000 insurance payout and a $25,000 payout is documentation. Here is what every Tampa homeowner should have on cloud storage before June 1 each year.
Pre-Season Documentation Checklist
- Dated photos of the outdoor AC condenser from all four sides, with the serial plate clearly legible
- Dated photos of the water heater with model and serial visible
- Dated photos of the main electrical panel showing main breaker rating and all sub-breakers labeled
- Receipts for hurricane tie-down kits, whole-home surge protectors, sump pumps, generators, and soft-start kits
- A copy of your current insurance declarations page showing separate coverage for wind, water, and flood damage
- A slow video walkthrough of attic, crawlspace, and all mechanical rooms
- HOA documents if applicable, showing any exterior modification restrictions
The Windstorm Deductible Trap
Most Tampa homeowners do not realize their windstorm deductible is separate from their standard deductible, often 2% to 5% of the insured home value rather than a flat $1,000. On a $400,000 home, a 5% windstorm deductible is $20,000 out of pocket before insurance pays a penny. Review this with your agent before storm season. Home Therapist provides dated pre-storm inspection reports if you need documented evidence of system condition for a future claim. Call (813) 343-2212 for a FREE inspection report.
FAQ
Does a surge protector actually prevent storm damage to my AC?
Yes. A whole-home surge protector installed at the main panel absorbs voltage spikes before they reach the compressor and control board. Installed cost is typically $469 for a quality SPD (surge protective device). This is the single cheapest hurricane upgrade with the highest return, one blown control board costs more than the surge protector.
Is hurricane tie-down on my outdoor AC unit required by code?
In Florida, outdoor condensers must be secured to resist design wind speeds. In Hillsborough and Pinellas counties, that is 140 mph minimum for most residential zones. Tie-down straps run roughly $150 to $250 installed and are inspected at permit. If your unit has no visible strapping, it is out of code.
What do I do if my condenser was submerged in floodwater?
Do not restart. Water above the pad level can enter the compressor housing, short the control board, and contaminate refrigerant lines. Call us for a FREE diagnosis. Most submerged units need controls replaced and a full system flush, some are total losses depending on duration and contamination.
What order do I restart my AC and plumbing after a storm?
Water first: flip main water back on, run a tap for 3 to 5 minutes, check for leaks. Then AC: visual inspection, outdoor disconnect ON, breaker ON, wait 15 minutes, thermostat to COOL. Water heater last, confirm water flows before restoring power to an electric tank.
How long will food last without power?
A closed refrigerator holds safe temperature for roughly 48 hours. A closed freezer holds 24 hours at half-full and 48 hours when fully packed. A deep freezer holds approximately 2 days if unopened. Every door opening cuts those numbers significantly. When in doubt, throw it out.
Should I run my generator all night?
Only if it is placed properly. Carbon monoxide from portable generators kills more Tampa residents after hurricanes than the storm itself. Place the generator a minimum of 20 feet from any window, door, or vent. Never in a garage, even with the door open. Install a battery-powered CO detector on every level of the home during generator use.
What if the power comes back but my AC does not turn on?
Most common cause is a surge-blown capacitor, typically a $279 repair. Second most common is a failed contactor. Third is control board damage. All three are diagnosable same-day. Call (813) 343-2212 for FREE diagnosis, we do not charge to tell you what broke.
Can I use pool water to flush toilets during a water outage?
Yes for flushing only. Pour roughly 1 gallon of pool water directly into the toilet bowl to trigger a manual flush. Do not drink pool water, do not bathe in it, do not use it for cooking. Chlorine levels are not safe for human consumption. Only use this workaround during confirmed municipal water outages.
When is tap water safe to drink after a hurricane?
Wait for the official all-clear from the City of Tampa Water Department or your local utility. Boil-water advisories typically last 24 to 72 hours after municipal pressure is restored. Even after the advisory is lifted, run every tap for 3 to 5 minutes to flush residual sediment from the lines.
Does homeowners insurance cover AC damage from a hurricane?
Wind damage is typically covered under the standard homeowners policy, subject to the windstorm deductible (often 2 to 5 percent of home value). Flood damage requires a separate flood insurance policy through NFIP or private carrier, standard homeowners does not cover any water damage from rising water. Surge damage coverage varies by carrier. Read your declarations page and document everything with dated photos.
How do I know if my AC was hit by lightning?
Three signs: the breaker trips and will not reset, a burnt smell near the outdoor condenser or air handler, or a visibly melted contactor inside the condenser cabinet. Lightning strikes can also fry the control board with no external signs. If you suspect lightning damage, do not keep resetting the breaker, that can cause a fire. Call us, we diagnose lightning damage at no charge.
Should I elevate my outdoor AC unit?
If you live in Zone AE or VE, yes. The pad should sit 8 to 12 inches above existing grade, above Base Flood Elevation where possible. This protects the unit from minor flood events and qualifies you for full flood insurance payout on the system. Retrofit pad elevation runs $400 to $900 depending on how the lineset and electrical whip route. In Zone X, elevation is not required but still reduces standing-water risk after heavy rain events.