This is to good to be true. 2 yrs ago I added a 20x20 addition on my home. At that time we laid the pex in the slab for additional heat [ if needed]. Well, we need it, the forced air system just is not enough. The system on page 69 is great. I only have one question . Do you think it can heat and supply hot water to two bathrooms. I must have looked at 100 web sites to find a system like this. Thank you ! Don

1. FOUR 3/4" X 3" BRASS NIPPLES
   
2. TWO 3/4" BRASS TEES
   
3. ONE 3/4" BRASS BOILER DRAIN
   
4. ONE BRASS CIRCULATION PUMP, MEDIUM HEAD WITH 3/4" BRASS FLANGES
   
5. TWO 3/4" FULL FLOW BALL VALVES
   
6. TWO 3/4" X 1/2" REDUCING BUSHINGS
   
7. TWO 1/2" MIP. BY 1/2" PEX ADAPTERS
   
8. 1/2" ID PEX TUBING 300 FEET OR LESS
   

Electric water heaters simply do not have enough Btu output for space heating. Remember when you take a shower you are using the stored hot water not the water that it is being heated.