Key Points

Energy-efficient upgrades pay off most as part of a full renovation, not as one-off purchases bolted on later.
The work that matters most is the unglamorous stuff: aging mechanical systems, better insulation, and larger south-facing windows.
Sequencing the trades and pricing the job before demo starts is what keeps one upgrade from undoing the next.

Tighten Up Your Home Without Removing Its Character

Why do the heating bills climb every year when nothing about the house has changed? Can you make an older home more comfortable without gutting the character that made you buy it?

In this post, you’ll learn which energy-efficient upgrades earn their place in a home remodel, how they fit older Seacoast homes, and why the order you do them in matters.

By the end, you’ll know which upgrades are worth it and what it takes to get them done right the first time.


What Energy-Efficient Home Upgrades Should You Make?

Energy-efficient home upgrades during a remodel come down to 4 things:

  1. Updating aging heating, cooling, and electrical systems.
  2. Improving the insulation throughout the home.
  3. Adding larger, south-facing windows for natural light.
  4. Choosing efficient appliances, smart controls, and materials.

1. Heating, Cooling, and Electrical Systems

Plenty of older homes around Portsmouth still run on their original heating, cooling, and electrical systems.

They were well built for their time.

They just don’t meet today’s safety standards or performance expectations anymore.

Persson Construction Inc walks homeowners through upgrading or replacing those systems, so the house runs with better comfort, efficiency, and long-term peace of mind.

A high-efficiency HVAC system does most of the heavy lifting, and pairing it with a smart thermostat lets the house heat and cool on a schedule instead of running full tilt all day.


2. Insulation

Insulation is one of the systems we check when a renovation goes down to the studs.

The usual options are:

  1. Spray foam.
  2. Fiberglass.
  3. Cellulose.

Which one you pick matters less than ensuring it seals the air leaks. This is especially true for attics, basements, and exterior doors, which are usually where the most air escapes.


3. Windows and Natural Light

When we open up a layout, we take down structural walls, vault the ceilings, and put in larger windows.

Wherever the house has south-facing exposure, we use it to pull in more natural light and make the most of the sun you already get.

The payoff is a brighter home that relies less on artificial lights.

Double or triple-pane glass cuts how much heat moves through the window, which helps the house hold its temperature through a New Hampshire winter and a humid summer.


4. Efficient Appliances, Smart Controls, and Materials

You can also pick energy-efficient appliances, the smart controls that run them, and the finishes.

A few choices carry most of the weight here:

  • ENERGY STAR-rated refrigerators, dishwashers, and ovens that use less power.
  • Low-flow faucets and showerheads that trim water use.
  • LED lighting that draws a fraction of what older bulbs pull.
  • Smart lighting and controls you can set to your routine or change from your phone.

For materials, options like bamboo or reclaimed wood flooring, tile with recycled content, and low-VOC paint keep the finishes durable and the indoor air cleaner.


What Energy Upgrades Add to a Home’s Value

Bring the systems up to current standards, and you protect the resale value without sanding off the character that made the house worth renovating.

The target is simple: a home that performs like a new build and still feels like the one you fell for.

There’s an upside while you live there, too.

Efficient systems mean lower utility bills month to month, and buyers down the road tend to notice a home that costs less to run.

Depending on the work, some upgrades may also qualify for utility rebates or state and federal tax credits, which take the edge off the upfront cost.


How We Coordinate the Upgrades Before Construction

Whether the upgrades pay off or frustrate you comes down to planning.

Our rule is Plan, Price, Build, because Proper Preparation Prevents Poor Performance.

Before any demo starts, we run a Trade Day, where framing, plumbing, electrical, HVAC, insulation, and the window vendors all walk the house together.

Having the HVAC, insulation, and window crews in the room early is what keeps the efficiency work coordinated, since that walk surfaces problems and locks in the order the work happens in.

For homeowners across the Seacoast, working with us also means an open-book Cost Plus budget and a Comfort Zone Budget up front.

You see where every dollar goes and what the project will really cost before you sign anything.

After that, every selection and change order lives in Buildertrend, with daily logs and 24/7 access, so you always know where the project stands.


Old Bones Meet Modern Performance With Persson Construction

We replace the aging heating, cooling, electrical, and insulation systems that quietly cost you in comfort and hidden maintenance, and we add larger south-facing windows for natural light. You end up with an older home that feels better to live in and runs more efficiently, without giving up the character you bought it for.

Ready to make your home tighter without losing what you love about it? 

Fill out our contact form today or give us a call, and we’ll start with a Comfort Zone Budget, so you know the real number before you commit to anything.

Frequently Asked Questions

Who handles the permits during a home renovation?

We handle the permits on every renovation we run. We pull and manage them as part of our scope and build the permit timelines into the schedule from day one, so approvals don't stall the job halfway through.

Can we stay in our home during the renovation?

For a full whole-home renovation, most homeowners move out during the heaviest phase of construction. It comes down to your project's scope, and we map that out with you before demo day so there are no surprises.

How long does an energy-focused home renovation take?

An energy-focused renovation runs as long as the project it's part of, and most whole-home remodels take 6 months or more. Older and historic homes with real structural work often run 9 months and beyond. We set the timeline during planning, built around your actual scope.

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