what all is included in the purchase? hoses? clamps?

I purchased the kit with 2 solar panels. It comes with pvc caps for one end of the panels. A rubber hose to connect the two panels together on the other end, as well as hose clamps. 2 pvc fittings for input and output flow to the panels. These are made to connect the filter hose to the panels. (although we bought new fittings to use all pvc pipe) It doesn't have any mounting hardware or rack to mount the panels to. So don't expect to have everything you will need. The picture on this ad shows more than what you will get. But performance of this heater has been very satisfying

can this be used to heat a [4 person] hot tub to a comfortably HOT temperature??

No. It only increases the temperature 6-10 degrees. If the water is hot then it may retain the heat & increase a little but would not be good as a main source of heat.

What is the maximum amount of gallons that this pool heater will warm up? Also, by how many degrees?

1 box of the S421P panels will heat up to 31ft round aboveground pool or 18'x36' oval pool. It can heat it up to as much as 15 degrees. SPQ Brands

Smartpool Wws421p Sunheater Solar Pool Heater For Above Ground Pools

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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10339 kr

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Sold byAmazon Faroe IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

☀️ Dive into longer, warmer swims with smart solar power!

DURABLE FLEX DESIGN - Tube-on-web panels flex with temperature changes for long-lasting, weather-resistant performance
SCALABLE HEAT POWER - Connect multiple units to boost heating capacity and warm your pool faster
ECO FRIENDLY COST SMART - Harness free solar energy to slash heating bills and reduce your carbon footprint
MAXIMIZE YOUR SWIM SEASON - Extend your pool enjoyment by weeks with solar-heated water up to -9.4°C cooler temps
PLUG PLAY SOLAR HEATING - Easy installation using your current pump and included flex hose adapters—no extra tools needed

The SmartPool WWS421P Sunheater is a polypropylene solar pool heating system featuring two 80 sq.ft. panels designed for above ground pools up to 80cm round or 45x91cm oval. It integrates seamlessly with your existing filtration system to raise water temperature efficiently, extending your swimming season by weeks. Its flexible tube-on-web design ensures durability and easy installation with included plumbing fixtures, making it a cost-effective, eco-friendly upgrade for pool owners.

Specifications

ASIN	B004VU986W
Best Sellers Rank	192,929 in Garden ( See Top 100 in Garden ) 34 in Pool Heaters
Customer Reviews	3.6 3.6 out of 5 stars (293)
Date First Available	18 April 2013
Item model number	S421P
Manufacturer	SPQ Brands
Material type	Polypropylene
Part number	S421P
Product Dimensions	121.92 x 2.54 x 609.6 cm; 13.15 kg

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