Pool swim season in Malvern, AR
Malvern, AR: how long the pool season really is
An unheated pool in Malvern reaches 78°F in Jul to Sep, about 3 months a year. The air allows up to 7 swimmable months with a heater (Apr to Oct).
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Heater options for a Malvern pool, side by side
| Option | Months | Swimmable | Energy/yr | All-in/yr |
|---|---|---|---|---|
| No heater | 3 | Jul to Sep | $0 | $0 |
| Solar cover only | 4 | Jun to Sep | $0 | $50 |
| Solar panels + cover | 6 | May to Oct | $0 | $283 |
| Heat pump + cover | 7 | Apr to Oct | $212 | $762 |
| Gas heater + cover | 7 | Apr to Oct | $581 | $1,006 |
For a 450 sq ft pool held at 80°F, at AR prices of 13.7¢/kWh electricity and $19/Mcf gas. All-in spreads the purchase over the equipment's life.
The cheapest way to the full season in Malvern
Solar panels + cover: 6 of 7 possible months for about $283 a year all-in, which works out near $94 for each month it adds.
Before you pay for any heater, buy a solar cover: on its own it adds 1 month here for about $50 a year (why a cover comes first). If you get quotes, ask for a heat pump sized to your pool's surface area; here it beats gas all-in (heat pump or gas).
Weather station: Malvern, 1.7 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.
Malvern month by month: air, sun and pool water
| Month | Air high | Air avg | Sun kWh/m²/day | Water, unheated | Water, covered | Heat pump $ | Gas $ |
|---|---|---|---|---|---|---|---|
| Jan | 52° | 41° | 2.5 | 41° | 47° | – | – |
| Feb | 56° | 44° | 3.0 | 42° | 48° | – | – |
| Mar | 65° | 53° | 4.2 | 50° | 56° | – | – |
| Apr | 74° | 61° | 5.3 | 59° | 65° | $126 | $336 |
| May | 81° | 70° | 5.8 | 68° | 74° | $45 | $134 |
| Jun | 88° | 77° | 6.5 | 77° | 83° | – | – |
| Jul | 92° | 81° | 6.3 | 82° | 88° | – | – |
| Aug | 92° | 80° | 5.8 | 83° | 89° | – | – |
| Sep | 86° | 74° | 5.0 | 79° | 85° | – | – |
| Oct | 75° | 63° | 3.8 | 69° | 75° | $41 | $111 |
| Nov | 62° | 51° | 2.8 | 56° | 62° | – | – |
| Dec | 54° | 43° | 2.3 | 46° | 52° | – | – |
Heating costs most in Apr (about $126 with a heat pump, $336 with gas). Sunshine peaks in Jun at 6.5 kWh/m²/day (NASA satellite data, 32.6 km grid cell). Highlighted months are swimmable with no heater.
How Malvern compares with nearby cities
Malvern ranks 22 of 39 Arkansas cities for unheated swim months; Benton, Bryant nearby get a longer season without a heater.
| City | Distance | Unheated months | Heat pump months | Heat pump $/yr |
|---|---|---|---|---|
| Hot Springs, AR | 15 mi | 3 | 7 | $184 |
| Benton, AR | 20 mi | 4 | 7 | $183 |
| Bryant, AR | 25 mi | 4 | 7 | $183 |
| Little Rock, AR | 36 mi | 3 | 7 | $205 |
| Maumelle, AR | 41 mi | 3 | 7 | $247 |
| North Little Rock, AR | 44 mi | 3 | 7 | $205 |