02:59PM | 05/30/00
Member Since: 01/25/99
13 lifetime posts
Hollywood- You appear to have a great deal of knowledge in this field and my question is in reference to the new refrigerant R410. What is the normal operating pressures for this system and do you need a special set of gauges for this gas? I was told today that you also need to be certified by Carrier in order to purchase this type of condensing unit from them. Know anything about it? One other thing, is there a great deal of difference in energy bills between 10 and 12 SEER units? Thanks. GlenO


05:54PM | 06/03/00
Member Since: 06/02/00
12 lifetime posts
R410A has a working pressure 1.6 times greater than R22. Takes different tools because of the greater pressures as well as the possibility of contanimation of R410A. If R410a is contanimated the oil and refrigerant separate and an acid is formed in the system which causes premature failure of the system. Any of the manufacturers Carrier, Rheem, Lennox who use R410A require addtional dealer training because of the dangers of pressures and contanimation in the system. As to 10 versus 12 Seer usually a minimum 10% savings can be realized by installing 12 but you may have a utility rebate available to you if you install a 12 Seer unit. Check with your utility. What usually happens is you become more aware of conservation and you get a bump because of that. But if we have a prolonged hot spell you may see no savings over a prior year bill because the last couple of summers have been mild AC weather. Instead think how much money you saved by ditching that old unit when you did.


02:22AM | 10/20/00
Member Since: 02/19/00
206 lifetime posts
Just found this message. Yes, special guages are needed and training is necessary. Without looking at the guages, I believe that the suction pressures are around 120-140 psi. Head pressures, I would have to look at the literature.
Ref.410A has already been talked about as to phazing it out. It's not at all as cracked up it's supposed to be. I have to say that it is VERY quiet though....


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

A Washington State couple called on BC&J Architects to transform their 400-square-foot boathouse into a hub for family bea... Built on a rocky island in the Drina River, near the town of Bajina Basta, Serbia, this wooden house was cobbled together ... Large steel-framed windows flood the interior of this remodeled Michigan barn with daylight. The owners hired Northworks A... Edging formed with upside-down wine bottles is a refreshing change. Cleverly and artistically involving recycled materials... If you’re up for a weekend project, why not try turning an old picture frame into scaffolding for a living wall? Low-maint... Similar to the elevated utensil concept, hanging your pots and pans from a ceiling-mounted rack keeps them nearby and easy... For windows, doors, and mirrors that could use a little definition, the Naples Etched Glass Border adds a decorative flora... The thyme growing between these stepping stones adds a heady fragrance to strolls along this lush, low-maintenance garden ... Decoupage is an easy way to add any paper design to your switch plate, whether it is wallpaper, scrapbook paper, book page... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Reluctant to throw away any of those unidentified keys in your junk drawer? Hang them from a few chains attached to a simp... A stripped-down model, sans screened porch, starts out at $79,000. Add the porch, a heated floor for the bath, and all the... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... Need a window and a door in a tight space? A Dutch door with a window may be your answer. These useful doors are split hor...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon