I suggest the name "WE" for your warranty and energy effeciency program. Colors and rounded corners are inspired from your website. The house with roots illustrates your keypoints well, I think. Any feedback will be appreciated :-)
This one is my favorite. Thanks for doing the "homework" and going to our site for a little inspiration and tie-in. Can you pull our name out of the mark? I like how the roots represent stability (warranty), but it lacks a little "green-ness" for energy efficiency/savings. Can you add a leaf or something that represents the efficiency? Thanks.
#8 further developed: I've removed the orange color – I think it´s maybe a bit too aggressive for your purpose – and added a more "greenish" color scheme. The roots are more a part of the ground now, and the solid blue sky depicts a clean and healthy environment (= energy efficiency). I'd rather not add more graphic elements like a leaf – this would imo complicate the logo too much, and I think the altered color scheme does the trick :-). Thanks for giving me feedback on this.
#8 and #38 further developed. The "green effeciency" is now symbolized by the merged tree/house. Please give me feedback on this to let me know what you think. Thanks :-)
The house in a circle symbolizes home warranty. The green leaf means energy efficiency. The orange fruit is a friendly an "down to earth" symbol for cost savings. This concept scales well to any media.