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gennady

gennady

Joined on January 27, 2011

Last Post on September 2, 2014

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Recent Posts

« 1 2 3 4 5 6 7 8 9 ... 23 »

Warranty

@ August 10, 2013 4:08 PM in Viessmann question

Isn't it a warranty issue? Where is an installer?

Price

@ August 7, 2013 10:39 PM in How is business

I solved this issue. I offer the best system for the job, no corners cut, period. I must make healty profit. If potential buyer cannot afford it, then he cannot have it. Simple like that.

prewailing wages

@ August 6, 2013 7:32 AM in Prevailing wage questions

I did PW jobs for over 10 years, hospitals, housing authority, schools, you name it. Almost went bankrupt. Decided to get out of it in 2009, and concentrate on boiler work we always did. Somehow all those public work turn out to be at best break even. Amount of regulations, stupidity and lack of competency of people in charge is mind boggling. I 've seen excellent companies put out of business at will of people in charge. Steer away from those projects, they are burial ground for honest and competent contractors. This is not about how much you pay, it is about completely different culture.

Boiler

@ July 31, 2013 7:59 PM in help with updating heating system

You will live with new boiler for many years. Make a wise choice and do not get sold on price and rebates. I m also a huge Viessmann fan. This is only boiler I offer to my customers. I have no call backs and have no boiler service to run. Set it and forget it. As per mod con versus cast iron, the part mod of the name makes all the difference, modulation of firing rate is the key factor in the savings, and CI boilers do not have this feature. I did modify commercial CI boilers to get load matching by imitating modulation, but it comes at a cost and if you do work from the scratch, go mod con, no question ask.

alpha

@ July 30, 2013 10:46 PM in Grunfos Alpha

Very good circulator. just calculate head for the zone and look up head - flow diagram for proper settings. it will stop when zone valve closes, but buy circulator with internal flow check valve.

navien

@ July 30, 2013 10:26 PM in help with updating heating system

i guess homeowner just works for navien and working on brand recognition. Burnham alpine has gianoni heat exchanger and it is heat exchanger of the past. Weil Mclain has good boiler, just avoid their gv90+, Go with indirect water heater. it will allow you to size boiler for heating load and satisfy your domestic hot water requirements.

Support

@ July 22, 2013 1:38 PM in Against the Plywood?

We do it like that

cadet

@ July 5, 2013 2:26 PM in Lochinvar WHN vs Crest vs others

cadet has gianoni heat exchanger, i would avoid it. Also i really do not understand why Lochinvar created a brand to compete with its own line of WHN.

thermostat

@ June 26, 2013 11:23 PM in Who makes modulating non-Condensing Boilers

Forgot to mention, disconnect thermostats, as well.

zoning

@ June 26, 2013 11:21 PM in Who makes modulating non-Condensing Boilers

modulating boiler has a minimum stable load. usually 20-25% of max output. if you divide minimum load into smaller loads by using zone valves, you make modulating boiler to work in on/off mode or even short cycle, and vaste a lot of fuel. If you use TRVs, you create indoor reset, and exact load from room to room. This is the most effective and comfortable heating. But you have to use VFD constant flow pump for this.

Baseboards

@ June 25, 2013 8:18 PM in Who makes modulating non-Condensing Boilers

You have to loose zoning it kills efficiency dead. Install TRVs Instead. Then install small mod con.

Terminology

@ June 17, 2013 7:02 PM in High Efficieny Gas Boiler Recommendation

Energy star compliant and 360.000 + btu? Are you building an apartment building?

name

@ June 17, 2013 3:29 PM in How the Europeans do it?

John, I do not want to bring in the names. It is confidential. And it is not really important.

Training

@ June 16, 2013 3:20 PM in How the Europeans do it?

You can bring horse to the water, but you cannot make this horse to drink water. Contractors are unqualified not because they are stupid, but because they do not need to be qualified.

Training

@ June 16, 2013 3:03 PM in How the Europeans do it?

They started production of 3rd generation and us certification would cost a few millions. With 2 reasons I mention in my post they did not feel it was financially sound to continue. The point I'm trying to make is: the root of our industry problems is in low cost of energy to American consumers, it makes efficient but more expensive equipment non competitive. All other issues are just consequences. Just my 2 cents.

American market

@ June 16, 2013 2:36 PM in How the Europeans do it?

A week ago I had dinner with group of people associated with well known manufacturer. I did some installations of their excellent, innovative and well ahead of time equipment. They invited me to let me know they are stopping offering their equipment in US market.
2 reasons:
1. They could not find qualified contractors to install and service their product
2. Complete lack of interest of American public in their product.

They increased their sales in Europe, Asia and Japan.

I felt humiliated.

Market

@ June 10, 2013 11:18 PM in How the Europeans do it?

Is a leveling ground. When customers are settling for low grade cheap installation and service the heating field cannot compensate talented youths and offer them good career, then only uneducated school dropouts filling in positions. And circle of this mess gets completed.

Air vent

@ June 8, 2013 9:37 PM in EDR?

Just move air vent down. It is too high. Only half of the radiator is working.

Boiler

@ May 27, 2013 10:08 PM in Mr.

Standard efficiency boilers are thing of the past. They are sized to the worst case scenario, and this worst case happens only few days a year. The rest of the time standard efficiency boilers just wasting fuel. Contemporary modulating boilers matching load exactly for any given moment when set up properly. Proper installation is essential but setting boiler properly is even more important. 15% savings is a nonsense number. If there is no saving of 70% or more on oil to gas conversion with mod con then you can ask installer for refund. He did not do his job.

Distance

@ May 27, 2013 9:53 PM in Boiler vents - I must be missing something

Distance between supply and exhaust in most cases must be no less than 12". But in new construction usually plumbers and engineers are ignorant in respect of proper boiler installation. So what you see is a least of their heating problems. It is called " builder grade" construction.

Pump slow down

@ May 20, 2013 11:31 PM in Direct Return Pump Question

Pumps slow down will lead to increased effect of gravity circulation. So top floor radiators will get the most of the flow. Make sure top floor radiators have working valves.

$$$

@ May 20, 2013 10:33 PM in Reverse Indirect

They are about 80% more $$ compare to same capacity regular indirects.
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