This is how they measure up side by side:
CL 6048 NCB-325GBTU 500,000 (I believe) 460,000
Firebox Cap 60 ft3 (my calc) 28.5 ft3
Heat Transfer Area 119 ft2 (94 ft2 my calc) 51 ft2 (my calc)
Separate Ash Pan None 39”D x 11.75”W x 4”H
Water Jacket Thickness
3/16"
Firebox Thickness
1/4"
Water Cap 393 gal 325 gal
Firebox Dim 60" x 48" x 36" 54"D x 30"W x 36"H
Door Dim 23" x 31" 27"W x 25.5"H
Weight 2,450 lbs 2,313 lbs
Current Price $8,570 $8,480
Warranty 25 yr limited 20 yr limited
The Central Boiler 6048 has much more heat transfer surface area, firebox capacity, and water capacity, but only produces 40,000 more BTU's than the NCB-325G (per the #'s).
The Nature's Comfort 325G has an oval firebox with less linear welding to fail, and minimal corner welds to fail.
I've read several reviews of both and both have similar stats when it comes to good and bad reviews.
$90, 5 years in warranty coverage, and 40,000 btus separating these two should make them pretty similar comparisons.
My question is, side by side, which is the better of these two boilers?