Nathan gives a homeowner a backyard entrance by converting a window into a backdoor; The team discuss dealbreakers homeowners should consider when looking to buy a home without major renovations.

The team looks back at some of their most memorable cutaway demonstrations over the years. Then, Richard Trethewey helps a homeowner add an outdoor hose spigot using PEX. Jenn Nawada visits a farm to learn how they use cover crops to protect and improve their farming soil during the off-season. Then, she demonstrates how a homeowner can use cover crops in vegetable gardens.

Richard helps a homeowner troubleshoot why her shower quickly runs out of hot water; Kevin heads to Upstate New York to meet with maker Jimmy DiResta and learns how to make a leather tote bag.

Heath Eastman upgrades basement lighting by wiring pull-chain fixtures to a wall switch for easier control. Lee Gilliam repairs snowplow lawn damage with a sod patch along a driveway. Then, the team revisits favorite 'What Is It' moments from over the years before guessing a new mystery item: a flat orange plate with spiky feet.

Heath shares his tips and tools homeowners can use to identify and label home circuit breakers; Tom discusses his hobby of lathe turning; Then, in Build It he turns a segmented bowl.

Mauro discusses how he sees color and some of his favorite colors; Then, he paints over an offices wood paneling; Lee discusses shrub pruning tools; Nathan travels to Portland to build a mud kitchen.

Richard Trethewey, Ross Trethewey, and Kevin O'Connor look back at clips to see how thermostats have evolved over the 25 years AskTOH has been on the air. Then, Ross compares common home insulation types, sharing which materials may work best for various situations. Nathan Gilbert helps a homeowner fix a sticking antique front door by replacing the worn hinges, lock hardware, and the door sweep.

The team looks back at some of their most memorable cutaway demonstrations over the years. Then, Richard Trethewey helps a homeowner add an outdoor hose spigot using PEX. Jenn Nawada visits a farm to learn how they use cover crops to protect and improve their farming soil during the off-season. Then, she demonstrates how a homeowner can use cover crops in vegetable gardens.

The team looks back at some of their most memorable cutaway demonstrations over the years. Then, Richard Trethewey helps a homeowner add an outdoor hose spigot using PEX. Jenn Nawada visits a farm to learn how they use cover crops to protect and improve their farming soil during the off-season. Then, she demonstrates how a homeowner can use cover crops in vegetable gardens.

Richard Trethewey, Ross Trethewey, and Kevin O'Connor look back at clips to see how thermostats have evolved over the 25 years AskTOH has been on the air. Then, Ross compares common home insulation types, sharing which materials may work best for various situations. Nathan Gilbert helps a homeowner fix a sticking antique front door by replacing the worn hinges, lock hardware, and the door sweep.

Richard praises the marvel of modern plumbing, then retrofits a radiant floor system; Nathan explains cable railing connections and maintenance; Jenn shares the updated USDA Plant Hardiness Zone Map.

Jenn and Nathan review Tulsa's stormwater management and install a rain barrel; Mark helps a homeowner divert water from her pooling patio; the team shares new additions to their tool bags.

Tom Silva uses a water demonstration to explain common gutter mistakes. Ross Trethewey installs a Wi-Fi kit that turns an old mini-split into a smart, app-controlled unit. After, some of the team watches some throwback clips of when their Boston accents came out wicked strong. Then, Mark McCullough removes and re-installs stucco foundation skirting.

Richard Trethewey, Ross Trethewey, and Kevin O'Connor look back at clips to see how thermostats have evolved over the 25 years AskTOH has been on the air. Then, Ross compares common home insulation types, sharing which materials may work best for various situations. Nathan Gilbert helps a homeowner fix a sticking antique front door by replacing the worn hinges, lock hardware, and the door sweep.

Richard Trethewey, Ross Trethewey, and Kevin O'Connor look back at clips to see how thermostats have evolved over the 25 years AskTOH has been on the air. Then, Ross compares common home insulation types, sharing which materials may work best for various situations. Nathan Gilbert helps a homeowner fix a sticking antique front door by replacing the worn hinges, lock hardware, and the door sweep.

Lee revives a homeowner's garden bed; a New Hampshire painter shares how she got into the trade; Heath installs a bathroom fan in a house with bad wiring.

Ross helps a homeowner install a smart thermostat after discovering a wiring issue; Mauro shares his tips on staining a deck to protect and maintain it; Mark helps a homeowner clean a bluestone patio.

Ross discusses IAQ testing; Mark restores a Victorian firebox; Jenn and Lee discuss transitioning landscapes from Spring to Summer; Tom, Kevin, and Zack Dettmore organize a tool storage cabinet.

The team looks back at how smart home technology has evolved over the 25 years of filming the show, from solar windows to robotic garden tools. Ross Trethewey installs smart privacy film to a bathroom window, allowing it to be clear or frosted with the flip of a switch. Jenn Nawada travels to Santa Fe to help a homeowner select and plant structural, drought-tolerant plants for their landscape.

Nathan helps a homeowner turn a reclaimed beam into a fireplace mantel; Richard demonstrates how to change a bathroom faucet; Ross explores innovations to geothermal installations.

The team looks back at how smart home technology has evolved over the 25 years of filming the show, from solar windows to robotic garden tools. Ross Trethewey installs smart privacy film to a bathroom window, allowing it to be clear or frosted with the flip of a switch. Jenn Nawada travels to Santa Fe to help a homeowner select and plant structural, drought-tolerant plants for their landscape.

Heath installs landscape lights in a garden; Richard explains how siphons work and how they are used to make a toilet work; Tom organizes tools with pegboard; Mark helps a homeowner redo his walkway.

Jenn demonstrates how to clean up a garden; Ross explains how air filters can catch unwanted air impurities and demonstrates how to build a DIY one; Tom and Kevin build an Adirondack chair.

Richard replaces a weird shower valve with a conventional pressure balanced one; Mauro repaints a radiator cover with lead paint on it; Tom explains how to identify and remove load bearing walls.

Mauro Henrique heads to Kansas City to restore a rusty BBQ smoker with high-heat paint. Then Kevin O'Connor, Jenn Nawada, and Lee Gilliam look back at some favorite tree moments from the last 25 years. After, Jenn teaches a homeowner how to pick out a tree from a nursery and plant it.

Mark learns how precast concrete steps are made and then replaces a homeowner's steps; Mauro explains how to refinish an old table; Heath helps a homeowner replace his front lamppost with a new one.

Mauro Henrique heads to Kansas City to restore a rusty BBQ smoker with high-heat paint. Then Kevin O'Connor, Jenn Nawada, and Lee Gilliam look back at some favorite tree moments from the last 25 years. After, Jenn teaches a homeowner how to pick out a tree from a nursery and plant it.

Ross explores ways that landscaping could be done automatically; Mark goes over different walkway and driveway deicers and how they might impact masonry products; Tom and Kevin build a modern bench.

Tom travels to Nashville to turn an original, exterior door into a Dutch door; Richard explains how to install a garbage disposal; Mark and Jenn reface a concrete wall with thin stone veneer.

Tom explains how different sanders work and how to sand well; Mauro shows how to use a power washer to clean siding; the team share more home inspection nightmares; Heath installs deck railing lights.

Richard moves baseboard heat from one side of a room to another; Jenn explains the basics of selecting different species of arborvitae; Tom and Kevin build an outdoor bench that doubles as a cooler.

Jenn travels to Orlando to upgrade a homeowner's irrigation system with a smart one; Heath explains a few different ways to troubleshoot flickering lights; Mark repoints a set of brick front steps.

As part of the show's 25th season celebration, Tom Silva reunites with a Chicago homeowner from season 15 to build a wooden toy truck as a holiday gift, a decade after he helped set up her garage woodshop. Richard Trethewey helps a homeowner prepare to host Thanksgiving by installing a pot filler faucet next to her stove. Then, the team revisits some of their favorite AskTOH holiday moments.

Richard explains a variety of failure points in a hose spigot; Mauro demonstrates the how to paint vinyl siding; Jenn explains how and why to maintain pruners; Nathan builds a custom fence gate.

Jenn explains how to care for echinaceas; Mark explains how to cut stone with a saw and chisel; Richard replaces a kitchen sink and faucet; Tom helps a homeowner wrap up a few kitchen projects.

Tom and Kevin create a two-layered hexagonal herb planter for the garden; Jenn explains materials to build a raised garden bed; Jenn and Nathan team up to help his nieces' Girl Scout troop rebuild and replant their community garden beds.

AskTOH welcomes Landscape Contractor, Lee Gilliam to the cast; Richard helps a homeowner repair a leaking 3-valve shower while retaining the bathrooms original 1930's tile; Lee and Jenn work together to refresh a homeowner's eroding sloped yard.

Nathan heads to Tulsa, OK, to build a replacement utility cover; Ross discusses low-level carbon monoxide exposure and differences in CO detectors and monitors; Mark helps a homeowner clean out creosote build-up in their brick kitchen fireplace.

Tom Silva uses a water demonstration to explain common gutter mistakes. Ross Trethewey installs a Wi-Fi kit that turns an old mini-split into a smart, app-controlled unit. After, some of the team watches some throwback clips of when their Boston accents came out wicked strong. Then, Mark McCullough removes and re-installs stucco foundation skirting.

The team looks back at how smart home technology has evolved over the 25 years of filming the show, from solar windows to robotic garden tools. Ross Trethewey installs smart privacy film to a bathroom window, allowing it to be clear or frosted with the flip of a switch. Jenn Nawada travels to Santa Fe to help a homeowner select and plant structural, drought-tolerant plants for their landscape.