Don't know for sure, I wired mine together with the smoke detectors directly into the house wiring so that they will all sound together. What I can say is that when I first wired the lot together and before I connected them to the mains, while I was waiting for someone optically enabled to double check I hadn't lost track of the colours of the wires the batteries didn't last long, maybe three weeks.
As far as I know though, the stand-alone battery units are good for a year, seems to me they recommend changing batteries when you set your clocks back in the fall. They also make them which just plug into an outlet. I didn't have any detectors until about this time last year, they make a new law here in Ontario that there must be a working smoke alarm on each level of a home. I decided it was time to bite the bullet and disregard the old battery smoke alarm and of course should an alarm go off in the basement I just know I would sleep through it . I installed a combination carbon monoxide and smoke detector near the furnace and water heater and another outside of the bedrooms in the new addition and a smoke alarm in the front hall where the stairs go up. I have another combination one to go outside of the bedrooms in the old part of the house maybe I'll get that in the wire is in the attic and alive I just can't bring myself to make that hole in the plaster and lath ceiling. A good excuse for one of those spin saws maybe this summer. That will be two on the top floor but the stair well splits so they could be partially isolated but I do meet current code. Anyway that is a long way to say that I have never been suspicious about carbon monoxide leaking but now that I have a detector I am glad. I can see some corrosion forming on the hood of my water tank and it is comforting to know that even a little leak will turn up and I am more comfortable about waiting for the summer to replace that damn water tank. Dale Leavens, Cochrane Ontario Canada [EMAIL PROTECTED] Skype DaleLeavens Come and meet Aurora, Nakita and Nanook at our polar bear habitat. ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, March 05, 2007 1:01 PM Subject: Re: [BlindHandyMan] what to know about replacing your central unit > Hi, > I just got a CO and smoke detector. Is the batterry life on a CO unit > different from that of a simple smoke detector? > Will it be a year, or 6 months? Or does it depend on make? > Thanks > > > On Fri, 2 Mar 2007, Dale Leavens wrote: > >> I am not sure about what it is you are smelling but most all forced air >> systems and many hot water heating systems will produce a smell >> particularly >> when the heat hasn't been on for a couple of days but often also after >> something has been disturbed. Actually a lot of things give off a smell >> when >> heated particularly if some time has passed since they were last heated. >> It >> may have something to do with small particles of dust or other aerosols >> being released as the materials are being excited by the increasing >> temperature I don't know. It doesn't take much and even with very good >> filtration only a very few molecules need be present in many cases for >> the >> nose to detect them. We used to get that even with our electric baseboard >> heaters way back when I had an all electric house. >> >> Imagine, for example, a swimming pool where the chlorine levels might be >> 6 >> parts per million or less in the water, how many in the air around the >> pool >> and yet the nose can often detect the smell. What is the concentration of >> particles from one fart in church? >> >> If you do have any gas appliances or any flame appliances really, you >> should >> buy and use a carbon monoxide detector. I have only had mine for a year >> but >> I am glad to have it. >> >> Good luck. >> >> >> Dale Leavens, Cochrane Ontario Canada >> [EMAIL PROTECTED] >> Skype DaleLeavens >> Come and meet Aurora, Nakita and Nanook at our polar bear habitat. >> >> >> ----- Original Message ----- >> From: "Kevin Doucet" <[EMAIL PROTECTED]> >> To: <[email protected]> >> Sent: Friday, March 02, 2007 7:44 PM >> Subject: Re: [BlindHandyMan] what to know about replacing your central >> unit >> >> >>> Hi, >>> >>> My Gas company checked for CO and all was well. >>> >>> At 12:52 AM 2/16/2007 -0600, you wrote: >>> >>>> You might have a hole in the heat exchanger. If you do you could wake >>>> up >>>> dead some morning. Better run to the nearest store and buy a C O >>>> detector. >>>> And do it tonight. >>>> >>>> Regards. >>>> >>>> Max. K 4 O D S. >>>> >>>> Email: <mailto:max%40maxsmusicplace.com>[EMAIL PROTECTED] >>>> >>>> Transistor site >>>> <http://www.funwithtransistors.net>http://www.funwithtransistors.net >>>> Vacuum tube site: >>>> <http://www.funwithtubes.net>http://www.funwithtubes.net >>>> Music site: >>>> <http://www.maxsmusicplace.com>http://www.maxsmusicplace.com >>>> >>>> To subscribe to the fun with tubes group send an email to, >>>> <mailto:funwithtubes-subscribe%40yahoogroups.com>[EMAIL PROTECTED] >>>> >>>> ----- Original Message ----- >>>> From: "Kevin Doucet" >>>> <<mailto:contactme%40kevindoucet.com>[EMAIL PROTECTED]> >>>> To: >>>> <<mailto:blindhandyman%40yahoogroups.com>[email protected]> >>>> Sent: Thursday, February 15, 2007 9:39 PM >>>> Subject: [BlindHandyMan] what to know about replacing your central unit >>>> >>>>> Hi list, >>>>> >>>>> This just might be a question especially for Boyce Ray, but, I >>>>> welcome any help from all! >>>>> >>>>> I have been smelling gas when my heating unit starts up. The gas >>>>> seemed to be coming from the air vents. I had my gas company come out >>>>> to see if it was the gas meter and they tell me it is the burner >>>>> being clogged and needing servicing. I had a local HVAC company come >>>>> out and clean the burner but I think I still am smelling gas. Can >>>>> this just be an accumulation of gas which has not dissipated or do I >>>>> need to get the HVAC folks back out? >>>>> >>>>> Also, my central unit, natural gas heating and electric air is >>>>> getting long in the tooth. It is not energy sufficient and I an >>>>> thinking about replacing it. I would like to know what to consider >>>>> when replacing this sort of unit and as well as any and all >>>>> ramifications and concerns that matter with an undertaking of this >>>>> type. I am not considering doing it myself. I just want to know >>>>> things to look at and consider; IE, energy savings verses cost of >>>>> replacement, tax rebates for this sort of home improvement, heat pump >>>>> verses a duel gas heat / electric A C, ETC. >>>>> >>>>> Any and all help is appreciated. >>>>> >>>>> >>>>> >>>>> >>>>> Thanks. >>>>> >>>>> >>>>> >>>>> Kevin Doucet >>>>> <mailto:contactme%40kevindoucet.com>[EMAIL PROTECTED] >>>>> >>>>> >>>>> confuse as says >>>>> >>>>> Blind man with unmarked forehead has large belly! >>>>> >>>>> >>>>> >>>>> >>>>> To listen to the show archives go to link >>>>> <http://acbradio.org/handyman.html>http://acbradio.org/handyman.html >>>>> or >>>>> >>>> <ftp://ftp.acbradio.org/acbradio-archives/handyman/>ftp://ftp.acbradio.org/acbradio-archives/handyman/ >>>>> >>>>> The Pod Cast address for the Blind Handy Man Show is. >>>>> >>>> <http://www.acbradio.org/news/xml/podcast.php?pgm=saturday>http://www.acbradio.org/news/xml/podcast.php?pgm=saturday >>>>> >>>>> The Pod Cast address for the Cooking In The Dark Show is. >>>>> >>>> <http://www.gcast.com/u/cookingindark/main.xml>http://www.gcast.com/u/cookingindark/main.xml >>>>> >>>>> Visit The Blind Handy Man Files Page To Review Contributions From >>>>> Various >>>>> List Members At The Following address: >>>>> <http://www.jaws-users.com/handyman/>http://www.jaws-users.com/handyman/ >>>>> >>>>> Visit the new archives page at the following address >>>>> >>>> <http://www.mail-archive.com/[email protected]/>http://www.mail-archive.com/[email protected]/ >>>>> For a complete list of email commands pertaining to the Blind Handy >>>>> Man >>>>> list just send a blank message to: >>>>> >>>> <mailto:blindhandyman-help%40yahoogroups.com>[EMAIL PROTECTED] >>>>> Yahoo! Groups Links >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> No virus found in this incoming message. >>>>> Checked by AVG Free Edition. >>>>> Version: 7.5.441 / Virus Database: 268.18.0/689 - Release Date: >>>>> 2/15/2007 >>>>> 5:40 PM >>>>> >>>> >>>> >>>> No virus found in this incoming message. >>>> Checked by AVG Free Edition. >>>> Version: 7.5.441 / Virus Database: 268.17.39/687 - Release Date: >>>> 2/14/2007 4:17 PM >>> >>> Thanks. >>> >>> >>> >>> Kevin Doucet >>> [EMAIL PROTECTED] >>> >>> >>> confuse as says >>> >>> Blind man with unmarked forehead has large belly! >>> >>> >>> >>> >>> >>> To listen to the show archives go to link >>> http://acbradio.org/handyman.html >>> or >>> ftp://ftp.acbradio.org/acbradio-archives/handyman/ >>> >>> The Pod Cast address for the Blind Handy Man Show is. >>> http://www.acbradio.org/news/xml/podcast.php?pgm=saturday >>> >>> The Pod Cast address for the Cooking In The Dark Show is. >>> http://www.gcast.com/u/cookingindark/main.xml >>> >>> Visit The Blind Handy Man Files Page To Review Contributions From >>> Various >>> List Members At The Following address: >>> http://www.jaws-users.com/handyman/ >>> >>> Visit the new archives page at the following address >>> http://www.mail-archive.com/[email protected]/ >>> For a complete list of email commands pertaining to the Blind Handy Man >>> list just send a blank message to: >>> [EMAIL PROTECTED] >>> Yahoo! Groups Links >>> >>> >>> >>> >>> >>> >>> -- >>> No virus found in this incoming message. >>> Checked by AVG Free Edition. >>> Version: 7.1.412 / Virus Database: 268.18.3/700 - Release Date: >>> 24/02/2007 >>> >>> >> >> > > > > To listen to the show archives go to link > http://acbradio.org/handyman.html > or > ftp://ftp.acbradio.org/acbradio-archives/handyman/ > > The Pod Cast address for the Blind Handy Man Show is. > http://www.acbradio.org/news/xml/podcast.php?pgm=saturday > > The Pod Cast address for the Cooking In The Dark Show is. > http://www.gcast.com/u/cookingindark/main.xml > > Visit The Blind Handy Man Files Page To Review Contributions From Various > List Members At The Following address: > http://www.jaws-users.com/handyman/ > > Visit the new archives page at the following address > http://www.mail-archive.com/[email protected]/ > For a complete list of email commands pertaining to the Blind Handy Man > list just send a blank message to: > [EMAIL PROTECTED] > Yahoo! Groups Links > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.413 / Virus Database: 268.18.6/709 - Release Date: 3/03/2007 > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Check out the new improvements in Yahoo! Groups email. http://us.click.yahoo.com/4It09A/fOaOAA/yQLSAA/86xolB/TM --------------------------------------------------------------------~-> To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday The Pod Cast address for the Cooking In The Dark Show is. http://www.gcast.com/u/cookingindark/main.xml Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/handyman/ Visit the new archives page at the following address http://www.mail-archive.com/[email protected]/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! 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