Hail and Outdoor Equipment
Why this matters
After a hail storm, a condenser with flattened fins can still run, still cool, and still pass a quick look from the driveway, and the customer will ask you two questions in the same breath: "is it broken?" and "will insurance pay for a new one?" The first you can answer with readings. The second you cannot answer at all, and the tech who says "insurance will cover that" has just made a promise on someone else's behalf. What you can do is produce the evidence an adjuster needs, before anyone combs a fin or hoses the coil, and say clearly what the damage does to the equipment.
This card owns the equipment damage and the photographs. The claim process itself, who files, and how you bill the insurer or the homeowner belong to the Insurance cards. See related: Working with Insurance Claims Reference.
Safety before inspection
Hail damage is not only cosmetic, so the walk-around starts with what can hurt someone.
- Cracked or missing electrical covers. A condenser's control box cover, a disconnect lid or a pool equipment junction box split by hail lets water reach live terminals. Do not touch the cabinet with wet hands or open the box until the disconnect is off and absence of voltage is proven with a tester checked on a known source before and after. If the disconnect itself is the damaged part, de-energize at the breaker in the panel.
- Solar panels with broken glass. A photovoltaic module produces voltage whenever light hits it, broken or not, and the array's DC wiring cannot be switched off at the module. Stay off and away from a damaged array and route it to a solar installer. Do not step on modules on a roof.
- Roof access. A hail-damaged roof can have loose granules and fractured shingles that slide. Inspect from the ground and from a ladder at the eave before anyone walks the roof, and do not walk a roof still wet from the storm.
- Broken skylights and glass on the ground below.
What hail does to each kind of outdoor equipment
| Equipment | Typical damage | Why it matters |
|---|---|---|
| Condenser or heat pump coil | Fins bent flat ("laid over") on the faces toward the storm | Blocks airflow through the coil, raises the condensing temperature, cuts capacity and efficiency |
| Condenser top panel and fan | Dented top, cracked plastic top or fan guard, chipped or cracked fan blade | A cracked blade runs out of balance, wears the motor bearings and can throw a piece |
| Condenser cabinet panels | Dents in louvered panels | Mostly cosmetic unless the louvers are crushed closed |
| Pool heater, pump, filter | Cracked heater top or pump lid, damaged control panel cover | Water entry to controls; a cracked pump lid draws air and loses prime |
| Solar pool collectors | Split or perforated tubes and panels | Leaks under pressure; panels usually replaced, not patched |
| Garage door | Dents in steel panels | Usually cosmetic; a dent at a hinge or a strut can bind the panel |
| Gas meter and vent terminals | Bent vent hoods, cracked plastic terminals | A crushed or blocked combustion vent terminal is a combustion hazard; check before re-firing |
The vent terminal point is easy to miss. A plastic intake or exhaust terminal on a high-efficiency furnace or water heater cracked or crushed by hail can restrict flow. The appliance may lock out on its pressure switch, or run with poor combustion. Inspect terminals before the appliance is put back into normal use, and run a combustion check if one was damaged.
Fin damage: measure it, do not eyeball it
How bad is the coil? Estimate the fraction of each face that is laid over, then the fraction of the total face area. A condenser with four equal faces where two faces are 60 percent flattened has lost airflow through about 30 percent of its face area (two faces at 60 percent, divided across four). That is an estimate, but it is a number you can write down and an adjuster can compare against photos.
What it does to performance. Read the condenser's approach (condensing saturation temperature minus outdoor air temperature entering the coil) after 15 minutes of running and compare it with the manufacturer's published figure for that unit. A clean, undamaged coil runs near the published approach. A coil with a large blocked area runs a higher approach, which is the functional evidence: the damage is raising the head pressure and reducing capacity, not just denting metal. See related: Extreme Heat and What It Does to Equipment, which owns the approach method.
Combing. A fin comb matched to the coil's fin spacing straightens fins that are bent but not crushed. Heavily flattened fins on thin aluminum often tear or will not reopen fully, and combing a coil that has dozens of square inches crushed is hours of work for partial recovery. Comb only after the photographs, and only with the owner's agreement, because combing changes the evidence.
Guards that help and guards that choke
Owners in hail country ask about hail guards, louvered or mesh panels that mount around a condenser to deflect stones.
- The test is free area. A guard must leave enough open area that the coil still gets its airflow. A guard that looks protective but blocks a large share of the coil face raises the approach every day of the cooling season, which costs more in efficiency than the hail it stops. Ask the guard's maker for its free-area figure and check the condenser manufacturer's installation instructions for minimum clearances and any statement about added restrictions.
- Measure after installing. Read the approach on a warm day with the guard on and compare it with the published figure. If it rises noticeably over the reading taken without the guard, the guard is choking the coil.
- Covers are not guards. A solid cover over the top of a condenser in the off season is a different product. Never run a condenser in cooling with a cover on, and do not wrap a whole unit in plastic, which traps moisture and invites corrosion and nesting.
- Do not block the top discharge. On top-discharge units, anything over the fan opening sends hot air back into the coil.
The photographs a claim needs
The adjuster will decide what the policy covers. Your job is a record that makes that decision possible without a second trip. Take the set below before any cleaning, combing or repair, with the camera's date and time stamp on.
PHOTO LOG - HAIL, OUTDOOR UNIT Job 24-1187
Storm date per customer: 05/14 Photos: 05/16 09:40
1 Wide: unit in place, house wall behind (location)
2 Data plate: model, serial, mfg date legible
3 Face N, full face, then close with ruler on fins
4 Face E, full face, then close with ruler
5 Face S, full face, then close with ruler
6 Face W, full face, then close with ruler
7 Top: panel, fan guard, blade (power off, locked)
8 Hailstones if still present, ruler for size
9 Collateral: downspout, mailbox, other soft metal
10 Gauge readings with outdoor thermometer in frame
Notes: est. laid-over area by face N 60 W 60 E 5 S 0
Three things make this set work. The ruler in the close-ups turns "the fins are bent" into a measurable area. The collateral damage on soft metals (downspouts, mailboxes, window screens, painted wood) shows the storm hit this property, which is the question an adjuster asks first. The reading with the thermometer in frame ties performance to that day's conditions.
Worked example: one condenser, one storm
A 10-year-old 3-ton heat pump on the west side of a house, two days after a storm the customer says dropped hail "the size of quarters." Outdoor temperature 88 F at the unit.
- Safety. The control box cover is intact. The disconnect is off and verified dead before the tech looks at the fan blade, then back on for readings with the top panel and box cover closed.
- Photos, as logged above. The north and west faces are each about 60 percent laid over, the east face about 5 percent, south face undamaged. The fan blade is intact. The downspout on the same corner has fresh round dents.
- Readings. Published approach for this model is 15 F (from the installation data, used here for illustration). After 15 minutes running, condensing saturation is 110 F, an approach of 22 F, 7 F over published.
- Area estimate. Four faces of equal size: (60 + 60 + 5 + 0) divided by 4 is about 31 percent of total face area laid over.
- What the tech tells the customer. "Your unit is cooling, and it is safe to run. About a third of the coil's face is flattened on the two sides that faced the storm, and it is running about 7 degrees hotter on the high side than this model should. That costs you efficiency now and adds wear over time. Whether that is a covered loss is your insurer's decision, not mine. I can send these photos and readings to you or to your adjuster."
- What the tech does not do. Comb the coil, which would change the evidence. Quote a replacement as "the insurance job." Write "total loss" on the ticket.
What would change the answer. If the approach had read at or near 15 F, the fin damage is mostly cosmetic and the ticket says so, honestly, even though the customer hoped for a replacement. If the fan blade had a crack, the unit is shut down and left off until the blade is replaced, because a blade that sheds a piece at speed can injure someone and destroy the coil from the inside. If the vent terminals on the house were cracked, they are checked before the furnace is used.
The failure mode. A tech who combs the coil on the first visit to "help," then is asked by the adjuster for the damage, has nothing to show. A tech who writes "needs replacement due to hail" on a unit reading normal approach has written a ticket that the adjuster's own inspector will contradict.
References
- Equipment manufacturer installation data: published approach, clearances, accessory restrictions
- See related: Working with Insurance Claims Reference; Document a Service Call for Insurance Claim
- See related: Extreme Heat and What It Does to Equipment; How to Advise a Customer After a Hazard Event