Learn how to troubleshoot using schematics like a real tech…

Click here to check out our structured, online appliance repair training courses for rookies and experienced techs.

FAQs | Repair Videos | Academy | Newsletter | Podcast | Contact

Stay connected with us...

Samurai on Facebook - become a fan today! Sign up for our free newsletter and keep up with all things Appliantology. Subscribe to our YouTube channel for lots of appliance repair tips and help! Follow the Samurai on Twitter and get timely morsels of Appliantological Wisdom! Subscribe to our MST Radio podcast to learn secrets of the trade.
  • Announcements

    • Samurai Appliance Repair Man

      [Webinar] Open Q&A, Monday, July 31 @7PM ET   07/25/2017

      See this calendar event for details:             
    • Samurai Appliance Repair Man

      Webinar Recordings Index Page   07/27/2017

      One of the benefits of your Professional Appliantologist membership is that you can attend the regular, live training webinars and you have access to the recordings as well. So if you can't make it to the live webinar, catch the recording at your convenience. The webinar recordings are conveniently listed for you on the Webinar Recordings Index Page.   

Lennox Complete Heat System

4 posts in this topic

I have a 10 yr old Lennox Complete Heat System

HM30 with AM30

. . . . . . . . . .

. . . . . . . . . .

(laughter continues)

I'm thinking of replacing them ..

What are my options / recommendations for a high efficiency direct vent gas water heater and

direct vent 105,000 btu furnace ?

and a 20 yr old Bryant 2 ton A/C EER 10.0 w/ scroll Compressor





Share this post

Link to post
Share on other sites

Need appliance parts? Call 877-803-7957 now!

13 is your minimum SEER .

A higher SEER demands more upfront cost that may or may not be returned in utility savings over the life of the unit.

Most furnaces come with a 20 year to lifetime warranty on the heat exchanger.

Any condenser with a Copeland compressor would be recommended.

Most systems now come with a 10 year parts warranty.

Amana condensers can be purchased with a lifetime warranty.

Share this post

Link to post
Share on other sites

NOTE: On the Amana condenser warranty.

If the coil or compressor fail Amana replaces the unit,not the part.

Share this post

Link to post
Share on other sites

I'm not aware of any basic central AC system sold in the US today that does not use a Copeland scroll. Even value brands like Goodman use them instead of Bristol recips like back in the day when I helped on the first CAC rulemaking (anno 1999). Only VS compressors like the panasonic in the Nordyne, or the rotaries found in some mini-splits / RAC's / PTACs are not scrolls. 


If budget is a concern, there are plenty of gas storage water heaters that allow direct vent. Simple, keep the combustion gases outside, etc. Easy to replace too. Powered units should allow more freedom re: venting materials (see Vertex, for example) but may be noisy. 


As for the furnace & AC unit, I think the installer is a bigger factor than the brand, all things considered. If you're in a cold part of the country or use propane, condensing furnaces are usually a no-brainer. Staging may help comfort and/or zoning. Similarly, a 16 SEER AC system may be a good deal after rebates, state, local, utility incentives. I'd look into both. 


One thing to always check also is whether your system is compliant re: the static pressure drop requirements set out by the manufacturer. I.e. are there sufficient supply / return ducts of the right size, etc. to ensure the thing can do its job. It's always amazing for me to see a six-figure job done wrong!

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now