18S model
is 18" long, 7" wide.
Ideal for a water tank size of up to 30 gallons.
24S model
is 24" long, 7" wide.
Ideal for a water tank between 30 gallons and 60 gallons.
34SS model
is 33" long, 7" wide.
Designed for barrel stoves, and other large fire boxes.
16T model
is 16" long, 10" wide.
Ideal for a water tank size between 60 gallons and 100 gallons.
18TL model
is 18" long, 10" wide.
Ideal for a tank size between 80 gallons and 120 gallons. When a "straight" coil won't fit, this coil with its "L-shaped" nipples usually will.
21T model
is 21" long, 10" wide.
Ideal for a water tank size between 80 gallons and 120 gallons.
23T model
is 14" long, 16" wide.
Ideal for hydronic use (baseboard heat), when 2 or 3 units are installed in a hotter-burning stove (such as a coal stove).
25T model
is 18" long, 22" wide.
Ideal for hydronic use (baseboard heat), when 2 or 3 units are installed in a hotter-burning stove (such as a coal stove).
31T model
is 21" long, 17" wide.
The new Hilkoil Baseboard Hot Water Heater, is a
high-volume model for providing ample baseboard heat. Ideal for hydronic use.
Universal Top model
is 32"x 22" with 7 loops and a 2" loop radius.
It exceeds "boiler codes" by a factor of 10X times.
Universal Side model
is 33"x 16" with 5 loops and a 2" loop radius.
It exceeds "boiler codes" by a factor of 10X times.
| model | WATER LOOP kit | HILKOIL kit | COMPLETE HILKOIL |
| S=Steel T=Twin Coil Steel L=Angle Steel SS=Steel Special Design |
a Stainless Steel Hot Water Loop, mounting hardware, gaskets, Instructions, and Warranty. | everything in the WATER LOOP kit, plus a temperature/pressure Relief Valve | everything in the HILKOIL kit, plus a Holesaw |
| 18S | $ 168 |
$ 183 |
$ 198 |
| 20S | $ 168 |
$ 183 |
$ 198 |
| 24S | $ 178 |
$ 193 |
$ 208 |
| 34SS | $ 235 |
$ 250 |
$ 265 |
| 16T | $ 210 |
$ 225 |
$ 240 |
| 18TL | $ 240 |
$ 255 |
$ 270 |
| 21T | $ 237 |
$ 252 |
$ 267 |
| 23T | $ 247 |
$ 262 |
$ 277 |
| 25T | $ 270 |
$ 285 |
$ 300 |
| 31T | $ 277 |
$ 292 |
$ 307 |
| U-Top | $ 245 |
$ 265 |
$ 285 |
| U-Side | $ 215 |
$ 235 |
$ 255 |