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Pool Heater-Chiller Units

A pool heater-chiller does both: heat in spring and fall, cool in summer. Every unit on this page handles both modes as standard: no add-ons, no upgrade required. The main decisions are pool size, budget, and whether you want an inverter compressor for lower running costs and quieter operation.

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Pool Heater and Cooler Combo Units: Find Yours by Pool Size

Pool Size
Budget Pick
Best Value (Inverter)
Premium / Best Warranty
Up to 5,000 gal
FibroPool FH120
20K BTU · 110V · ~$975
—
FibroPool FH220
20K BTU · 240V · $1,146
Up to 7,500 gal
FibroPool FH135
35K BTU · 110V · ~$956
FibroPool FH235-i
35K BTU · 240V · Inverter · $1,470
Madimack InverECO 32K
32K BTU · 240V · Inverter · $2,110
Up to 10,000 gal
FibroPool FH255
55K BTU · 240V · $1,853
Madimack InverECO 40K
40K BTU · 240V · Inverter · $2,450
—
Up to 15,000 gal
FibroPool FH270
70K BTU · 240V · $1,935
Madimack InverECO 50K
50K BTU · 240V · Inverter · $2,680
Madimack InverECO 66K
66K BTU · 240V · Inverter · $3,115
Up to 17,500 gal
FibroPool FH285-i
85K BTU · Inverter · $2,386
AquaCal T70 TropiCal
63K BTU · Inverter · $3,311
—
Up to 20,000 gal
Madimack InverTitan 90K
90K BTU · Inverter · $5,000
AquaCal T100 TropiCal
108K BTU · Inverter · $4,770
Madimack InverELITE 84K
84K BTU · Inverter · 25-yr warranty · $6,230
Up to 25,000 gal
AquaCal SQ140R
114K BTU · $4,652
AquaCal T100 TropiCal
108K BTU · Inverter · $4,770
Madimack InverELITE 116K
116K BTU · Inverter · 25-yr warranty · $6,900
Up to 30,000 gal
GulfStream HE125 TA
118K BTU · $4,695
AquaCal T130 TropiCal
123K BTU · Inverter · $5,519
Madimack InverTitan 112K
112K BTU · Inverter · $5,790
Over 30,000 gal
GulfStream HE150 TA
137K BTU · $5,095
AquaCal SQ160R
128K BTU · $5,316
AquaCal SQ200R
138K BTU · $6,450

Pool size ranges assume a moderate US climate (Florida, Texas, Southwest). Cold-climate buyers (New York, Northeast, Midwest) should size up one tier. Prices shown are current sale prices where applicable.

Choosing the Right Pool Chiller Heater Combo

Inverter vs. Standard Compressor

Standard single-speed compressors cycle on at full power and off - reliable, simple, lower upfront cost. Inverter compressors modulate continuously to match demand: quieter, more efficient at partial load, and meaningfully lower monthly running costs. For pools used frequently or in warm climates where the pump runs most of the year - Florida, Texas, Arizona - an inverter pays back the price premium within one to two seasons.

Every Madimack unit is a full inverter. FibroPool offers both (FH235-i and FH285-i are inverter; others are standard). AquaCal's TropiCal line is inverter; the SQ-R line is standard. GulfStream TA units are standard.

110V vs. 240V: Check Before You Order

The FibroPool FH120 and FH135 run on standard 110/120V - plug into any outdoor outlet, no electrician needed. Every other unit on this page requires a dedicated 220-240V circuit. If you don't have that run already, budget $300-$800 for an electrician before ordering.

Not sure what voltage you have? Check your breaker panel. A 240V circuit uses two breaker poles tied together. Pool heat pumps on 240V typically need a 30-60A dedicated breaker. Your electrician can confirm in under 10 minutes.

Pool Heat Pump with Chiller vs. Heat-Only: Which Do You Need?

A pool in direct sun can reach 90°F+ in summer in Florida, Texas, Arizona, and New York - too warm to swim in and hard on pool chemistry. A heater chiller combo lets you hold a target temperature year-round. Buying a pool heater and chiller combo upfront is cheaper than replacing a heat-only unit later, and most units here are priced comparably to their heat-only equivalents at the same BTU output.

Shopping heat-only? Units in the Pool Heat Pumps collection cost less upfront, but many of them are heat only and won't cool. If there's any chance you'll want cooling (especially in a warm climate), the heater-chiller is almost always the right call.

Pool Heater Chiller FAQs

What is a pool heater chiller unit?

A pool heater chiller is a single unit that can both heat and cool your pool water. In heating mode it extracts warmth from the air and transfers it to your pool. In cooling mode it removes heat from the water and releases it into the air. One unit handles year-round temperature control. Every product on this page is a heat/cool unit - if you only need heating, you can use it in heat mode only and ignore the cooling function.

Which pool heater chiller is best for my pool size?

Match the BTU rating to your pool volume. For pools up to 10,000 gallons, the FibroPool FH235-i (35K BTU) or Madimack InverECO 40K are solid choices. For 15,000 to 20,000 gallon pools, the GulfStream HE125 TA (118K BTU) or Madimack InverTitan 90K cover that range well. For larger inground pools up to 30,000 gallons, the AquaCal T130 TropiCal (123K BTU) or GulfStream HE150 TA (137K BTU) are the right tier. In cool climates, size up one tier from whatever the table suggests.

Can I heat my pool in winter and cool it in summer with the same unit?

Yes - that is exactly what these units are designed to do. In spring and fall you run it in heat mode to maintain a comfortable temperature. In summer when water gets too warm, you switch to cool mode at the unit's control panel or via a connected app on inverter models. The only limit is that heat pumps lose efficiency below about 50 degrees F air temperature, so in very cold climates winter heating may still require supplemental heat or closing the pool for the season.

Do pool heater chiller units cost more to run than heat-only units?

Not in heating mode - the electricity consumption in heat mode is identical whether the unit has cooling capability or not. Cooling mode typically costs $30 to $70 per month for an active summer month on a standard inground pool. The main cost difference is upfront: heat/cool units cost $300 to $800 more than comparable heat-only models. In warm climates where you will actually use the cooling function, that premium pays back quickly in comfort and avoided chemical costs from overheated water.

What temperature can a pool chiller reach?

Most pool heater chiller units can cool water to a practical lower limit of about 60 to 65 degrees F. For most swimmers the target is simply keeping water below 85 degrees F on hot summer days, which these units handle easily. If you need precise low temperatures for competitive swim training or cold plunge use, call us at 800-809-3741 - some units are better suited for sustained low-temperature operation than others.

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