Harman HYDROFLEX60 Pellet Boiler

20 Responses

1. I just had a Hydroflex 60 installed nine days ago in our 1350 sq ft cape in NW Connecticut. Got rid of the oil boiler and oil tank completely, so I’m married to the Hydroflex now. There’s a learning curve to this unit, and I got it dialed in and stabilized in under a week. I’m burning Turman Oak Pellets, and after a cold-weather week (wind chills below 0F for several days) burning over 50% of the time, supplemented several days by our wood stove, I’ve burned about 12 bags and have half an inch of ash in the ash pan. I just did my first cleaning of the firebox, exhaust area and heat exchanger, and it took about 15 minutes. On the coldest days the unit can maintain mid-upper 60s in the house while also heating our domestic hot water in an indirect-fired water heater. We like it warmer, which is why we supplement with the wood stove. I will add insulation in some obvious weak places and hopefully boost the maximum temp we can reach on really cold days and nights. Cost of the unit was $5099 after $100 Harman coupon and store match. Delivery, install, plumbing, removal of old boiler and tank all sent the total project cost to about $9K. I added the optional bulk hopper that holds 1,500 lbs and automatically feeds the boiler for an additional $1,500. I expect to save around $700/yr in fuel. Cost of new top efficiency Biasi oil boiler, installed with extra efficiency options, WITHOUT a new tank, would have run me $6,800, so I hope to pay off the difference in about 5 years.

2. This coming winter will be my third winter with my Hydroflex 60. I have it installed in my second home that is located near the Canadian border in Northeastern Vermont. The house is a cape style home with FHW baseboard heat in the basement, first floor and second floor, as well as for HW. I use the home every weekend throughout the year. During the week, when I’m not using the house, I keep the house temperature at 58 F, when I’m using the house, the temperature is 74 F. I have a programmable thermostat that ramps up the temperature of Friday afternoon, so that the house is toasty warm when we arrive. if there are no pellets remaining, my oil heat will kick on. Other than being out of pellets, my oil heat does not turn on, even on the coldest days (-15F mid-winter). On Sundays, prior to leaving, I fill the hopper with four bags of pellets (I have used Okinagans every year). For the most part, when I return on Friday, there are still pellets in the hopper, or the hopper has just run out and the boiler is still hot (this gives me the opportunity to clean it before I get it going again. I purchased oil this winter, but it was the first time in three years. Last September, I purchase 2.5 tons of Okinagans, plus I had a 20 bags remaining from the previous year. As of today, I have ten bags remaining.
   As far as cleaning goes, I empty the hopper every one-two weeks. Once a month, I clean the heat exchanger, firebox and fan. About twice a year, I do a cleaning that includes an aggressive brushing of the heat exchanger tubes with a metal tube brush. I also clean the boiler exhaust around three times per year.

3. I have found it to be $5299 in a few places

4. WHAT IS THE COST $$$$$

5. WHAT IS THE COST $$$$$

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