Energy issues

No, I'm not talking about my workouts here - this is about remodeling.

As we've been browsing for new appliances I learned the details of the tax credits available for energy-efficient home improvements this year:
http://www.energystar.gov/index.cfm?c=products.pr_tax_credits#s1

This is probably the year to get these things done! There are tax credits available of $1500 total (up to 30% of purchase price) on a slew of energy-efficient items. Free money!

We hope to take advantage of this for:
* Outside doors (need at least 1 replacement needed)
* Storm doors (need at least 1 replacement needed)
* HVAC

I'd like to add an on-demand tankless hot water heater (like my Canadian friend Dianne just did), but we don't have natural gas or propane in the house and I don't want to add it just for that, so we will skip it. I also looked into an electric heat pump water heater, but those are just coming on the market this year for residential use and are recommended for larger-volume usage and warmer climates, so I think we'll have to stay with the traditional models if we replace the hot water heater.